34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity
Once I have all your powers combined, nothing can stop me from attaining the ultimate prize!

– Aggregor to his prisoners[1]

Aggregor is an artificial Osmosian intergalactic criminal whose main objective was to get to the Forge of Creation and absorb the powers of an infant Celestialsapien (which he refers to as the "Ultimate Prize") to gain unlimited power and rule the universe. Ruthless and cunning, Aggregor was a dangerous enemy for Ben, as well one of his most dangerous enemies.

To achieve this goal, he absorbed five powerful aliens he hunted down from the Andromeda Galaxy.


Aggregor's appearance is similar to that of a human. However, he has small flesh-colored horns on his head and red eyes ringed with black marks (a sign of recent Osmosian energy intake). He has long black hair, and wears a brown knee-length, open-chested tunic, baggy jeans, and black calf-high boots. He also wields a spear-like weapon that he can use to fire red energy blasts and projectiles.


Aggregor is a cruel, sadistic, menacing, arrogant, and remorseless sociopath, who does whatever it takes to achieve his goals, having no remorse for any of his actions. He has a brilliant mind, and his plans go to extremes to succeed. Aggregor's abilities make him a daunting and formidable enemy and he has managed to hold his own against even the Plumbers. He fears no one and hungers for power.

Unlike most of Ben's other enemies, such as Vilgax and the Highbreed, Aggregor prefers to carry out his plans himself rather than trusting his robotic minions to do the work, instead using them for lesser duties, such as maintenance, manual labor, security, and being cannon fodder against his enemies.

Additionally, Aggregor's hunger for power appears to stem from the possibility of not wanting to be under anyone's control. His rebuttal to Kevin's claim that absorbing energy causes Osmosians such as himself to go insane, "Lies! Told by the powerful to control the weak!", gives a hint of his motivation. This also relates to his desire to possess ultimate power in order to control the entire universe.



Sometime after Kevin and the Amalgam Kids failed to capture Ben Tennyson, Servantis created Aggregor as a lab experiment, using Kevin's DNA to create a perfect copy of his absorption powers. Just like the other prisoners of Servantis, Aggregor was taught about aliens and their powers. However, after Ben removed the Omnitrix, Servantis wiped Aggregor's mind and set him loose as well, since there was no need for an army anymore.[DJW 1]

Studying the legends of the universe, Aggregor learned about the Forge of Creation.[DM 1]

In Escape from Aggregor, it is shown that Aggregor captured Bivalvan, Galapagus, P'andor, Andreas and Ra'ad to absorb all their powers and abilities using a machine he had built back on Osmos V in order to become strong enough to gather and reassemble the four pieces of the Map of Infinity so he can travel to the Forge of Creation and absorb the powers and abilities of a newborn Celestialsapien so that he can become omnipotent (which he refers to as "The Ultimate Prize"). However, his prisoners were able to escape to Earth.

Ultimate Alien

No one escapes Aggregor

Aggregor in a Plumber suit

In Fame, after Bivalvan was defeated, he explains that Aggregor captured him along with four others but they managed to escape to Earth. At the end of the episode, instead of the Plumbers who Bivalvan was expecting to send him back to his home planet, Aggregor appeared. His first line was "No one escapes me, Bivalvan" and he captured him.

In Escape from Aggregor, Galapagus told the tale of how he and the other four aliens were captured and escaped. At the end of the episode, when Ben sent Galapagus back to Aldabra, the Plumber that was transporting him is revealed to be Aggregor in disguise.

In Too Hot to Handle, after Ben, Gwen and Kevin succeeded in subduing P'andor and had him sent home. Aggregor attacked the ship transporting him. Aggregor's attack resulted in the Plumbers being flung into space, killing them, while he recaptured P'andor.

In Andreas' Fault, Aggregor found Andreas buried underneath the remains of a Forever Knight castle before transporting him back to his ship and putting him in a stasis pod alongside Bivalvan, Galapagus, and P'andor, with only Ra'ad remaining to be recaptured, after which he states that then "the fun begins".

In Fused, Ben, Gwen and Kevin met Aggregor face to face. It was revealed by Ra'ad that Aggregor was using the signal of the Ultimatrix to locate the aliens. Ra'ad attempted to destroy the Ultimatrix to prevent Aggregor from finding him, but the Ultimatrix attempted to scan his DNA at the same time, resulting in Ra'ad being trapped in the Ultimatrix and AmpFibian was the only alien Ben could turn into. When Aggregor arrived by crashing through the roof, and demanded to know where Ra'ad was, the team fought him, with Ben transforming into AmpFibian. Aggregor decided to use AmpFibian as a replacement for Ra'ad, but before he could subdue him, Gwen used a teleportation spell to teleport herself, Kevin and AmpFibian to Kevin's warehouse.

Aggregor returned to his ship to have his sensors track the Ultimatrix signal, but it was off-line because of Ra'ad's attack. Gwen and Kevin rebooted the Ultimatrix to separate Ben and Ra'ad, allowing Aggregor to find them again. Knowing he would be coming, Ra'ad quickly fled just as Aggregor came in through the roof again. After dispatching Kevin and Gwen, Aggregor demanded AmpFibian from Ben, who confronted him as Brainstorm. Unfortunately, Aggregor used his spear to ground Brainstorm's lightning attacks and neutralized his electrokinetic powers by firing red energy blasts onto his brain.

Aggregor then attempted to change a severly weakened Brainstorm back into AmpFibian for his plan by stabbing and manipulating his Ultimatrix symbol with the blade of his spear (nearly killing Brainstorm in the process). However, Ra'ad, having been given a lecture by Kevin, returned and attacked Aggregor, saving Brainstorm. Aggregor regarded Ra'ad's actions as "noble" before he clashed with the Amperi and quickly overpowered him, but Ra'ad grabbed Aggregor's spear and electrocuted it, resulting in a huge explosion that destroyed the warehouse, but Ben and Gwen were able to escape while Aggregor captured Ra'ad during the blast. With all five of his prisoners recaptured, Kevin feels Aggregor has won, but Ben, having scanned all five aliens, vows to use their powers to stop Aggregor.

Aggregor's Machine

Aggregor setting up his machine that will allow him to fully absorb the powers of the Andromeda aliens

In Ultimate Aggregor, it was shown that after Aggregor escaped the warehouse's explosion with Ra'ad, he traveled out into the desert to call his ship and transport him. However, he found himself ambushed by the Plumbers. Unfortunately, Aggregor was prepared and unleashed a torrent of laser cannons to bring down the entire ambush while he transported himself and Ra'ad to his ship. Just as he was about to make a jump to Osmos V, the lead Plumber of the ambush used one of the downed ships to take out the hyperdrive of Aggregor's ship. Unable to leave Earth, Aggregor had to come up with a new plan. When Ben and his team tracked his ship, they were attacked by Aggregor's robots but defeated them. When Ben, as Lodestar, boarded the ship, it self destructed, but Lodestar was able to survive with his magnetic abilities pulling him back together.

Meanwhile, Aggregor broke into Los Soledad with intent on using the Entropy Pump from Professor Paradox's old time-traveling experiment as a replacement for the machine on Osmos V. Upon discovering where he was, Ultimate Swampfire and his group stormed Los Soledad, charging through the remainder of Aggregor's robots. Needing more time, Aggregor used a Mind Control Headband to have the five Andromeda aliens attack them. Upon being freed from his control, Aggregor recalled the aliens. When the team confronted Aggregor, Kevin warned him not to go through with his plan, mentioning that absorbing energy causes Osmosians to go insane, while explaining his own acts in the original series. Aggregor however, refuses to believe it, claiming that powerful Osmosians told that to weak Osmosians to control them. Before Kevin could convince him otherwise, Aggregor used the Entropy Pump to transfer the powers and abilities of the five aliens into himself. Humungousaur managed to stop the pump before it destroyed reality. Unfortunately, it was too late as Aggregor had completely absorbed the five aliens, transforming into his mutated state, a massive chimeric mutant, named Ultimate Aggregor.

See Ultimate Aggregor for the events involving Aggregor in his mutated form

Aggregor after having his energy and powers absorbed by Ultimate Kevin

In The Forge of Creation, Ultimate Kevin attacks Ultimate Aggregor and absorbs him, reverting Ultimate Aggregor back to his previous form and leaving him unconscious. Though Ultimate Kevin, having gone insane from absorbing the Ultimatrix energy, was about to kill him, he is persuaded to spare his life by Gwen, Ben and Young Ben.

Sometime afterwards, Aggregor was taken into custody by the Plumbers[DM 2] before eventually being sent to the Null Void.[2]

Powers and Abilities

EfA (282)

Aggregor absorbing the energy, DNA and powers of a Geochelone Aerio

Being an Osmosian, Aggregor has the ability to absorb matter or energy from anything in order to use it in various ways. He prefers absorbing powers from other lifeforms, acquiring 1/10 of the creature's powers.

Unlike Kevin (until he used the machine), the powers and abilities Aggregor absorbs don't change his appearance (when Aggregor absorbed a Geochelone Aerio, his appearance stayed the same, though he could now open six holes on his torso at will to make use of the species' abilities).

Also, while Kevin, when he absorbed powers from the Omnitrix aliens, left them unharmed (as he absorbed the transformative energy of the Omnitrix rather than the aliens themselves), Aggregor absorbs all of his victims' energy, leaving behind nothing but a desiccated skeleton/shell. An exception goes with the machine he used that boosted this ability and allowed him to absorb the aliens' bodies as well.

Aggregor is a very skilled tracker, as he was able to use the Ultimatrix as a homing device to hunt down all five of the Andromeda aliens.

Aggregor is an excellent strategist, as he was able to set up a deadly ambush with his ship for a squad of Plumbers after he had captured Ra'ad.[3]

Aggregor is also a skilled inventor, as it was stated that he had created a machine on Osmos to help him absorb the Andromeda aliens and their powers.

Aggregor also possessed vast knowledge of different alien species, having learned about them during his time as a prisoner of Servantis. He knew the name of Ra'ad's species (Amperi), and that Brainstorm was electrokinetic. He likely knew all about the various powers of Bivalvan, Galapagus, P'andor and Andreas as well.


Fused (491)

Aggregor using his spear to subdue Ra'ad, who's species is electrokinetic

In addition to his absorption powers, Aggregor possesses a spear-like weapon that can be used as a melee weapon, as well as a ranged weapon to fire blasts of red energy that can disrupt other energy fields or blast enemies in a fight. He can also use the spear to summon his ship, and lift and move objects with a red electromagnetic aura of the same/similar energy.[4]

According to Aggregor, the spear is designed to combat electromanipulative species, as seen when he used it to ground and absorb Brainstorm's electrical attacks and easily defeat him and Ra'ad. In combat, Aggregor was very skilled with his spear, being able to fire it's red energy blasts with accuracy. He could also spin the spear at high speeds to block attacks from other energy, such as Gwen's mana.[5]

In addition to his spear, Aggregor possessed a device to help him detect Andreas's life signature while searching the remains of a Forever Knight castle,[4] and discover the location of the Chronologger.[3] He also had a different one to call his ship and have it fire its weapons down onto the Plumbers, similar to a remote control.[3] He also possessed a pair of energy cuffs and a floating device with a blue force field which he used to escort Ra'ad to his ship with, as well as several Mind Control Headbands to control all five of the Andromeda aliens and have them attack Ben's team.[3]

Much like Vilgax, Aggregor has an army of Aggrebots at his disposal rather than living soldiers, though his robots are more humanoid in shape and stature than Vilgax's.


Aggregor was very dependent on his spear, using it in almost any fight.[5][1]

Aggregor was shown to be vulnerable to Gwen's mana attacks and could be harmed by them.[6]

Aggregor is vulnerable to energy-based attacks unless he were to use his natural absorption powers to absorb them. However, he lacks experience with absorbing energy, and doing so could be potentially dangerous to his physical and mental state.


Ben 10: Ultimate Alien

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Aggregor's name comes from the word "aggregate", which means to form a collection from different parts. This is obviously a reference to his plan to absorb the Andromeda aliens' powers which re-created his body using the parts from the five aliens.


  • Aggregor was a much greater threat than Vilgax, even before he became Ultimate Aggregor.[DM 3]
  • Kevin has more experience with absorbing energy than Aggregor.[DM 3]
  • Aggregor did not place the Andromeda Galaxy aliens in the separate pods in Escape from Aggregor because he wanted to save power.[DM 3]
  • Ben could have defeated Aggregor in Fused if he hadn't used an electrokinetic alien.[DM 3]
  • Aggregor refers to Kevin, a fellow Osmosian, as a "hatchling," a reference to their difference in age and power.[5] However, this was due to the false memory implanted by Servantis, as Aggregor's powers itself came from Kevin.
  • Aggregor is one of the few villains that was never beaten by Ben himself.
  • Aggregor's voice sounds almost identical to Ragnarok's.
  • In his first appearance, Aggregor had six horns; In all his other appearances, he had only four.
  • It was originally planned that the Rooters arc in Omniverse would begin by having Aggregor seek out Kevin, revealing that he was an experiment by the Rooters to duplicate Kevin's powers - potentially with his memories having been fabricated.[DJW 2]
    • If that episode was to go as planned, Aggregor's genetic code would have been breaking down resulting in his "death", having been melted into what Derrick J. Wyatt called "ooze".[DJW 3]
    • When asked who Derrick would have chosen to voice Aggregor in Omniverse, he stated that he felt Clancy Brown would be a good fit.[DJW 4]
  • Aggregor is mentioned in Cosmic Destruction by Psyphon, who says that he considered working for Aggregor, but he preferred to work alone, with this leading him to his eventual defeat.
  • Aggregor's Toon Cricket Team's name is Aggregor Aggressives.
  • Aggregor's appearance is very similar to a Zabrak (more specifically Eeth Koth, Agen Kolar, Savage Oppress, and Darth Maul) from the Star Wars franchise.
  • Part of Aggregor's personality is similar to Ganondorf from The Legend of Zelda video game series, with the two studying legends of an infinite power and hunting down said power in order to take over the universe.
  • Aggregor bears a few similarities to Cell, a major antagonist in the manga/anime Dragon Ball Z.
    • Both start off being very strategic yet slightly arrogant, but as they become more powerful, their arrogance and aggression increases.
    • They both have the ability to absorb others, albeit in different ways (Aggregor absorbs through touch and leaves desiccated bodies, while Imperfect Cell "drinks" victims of their life force through the proboscis on his tail, leaving nothing behind).
    • They both seek to gain ultimate power and perfection and end up achieving incredibly powerful forms that are very difficult for the heroes to defeat (Ultimate Aggregor and Perfect Cell respectively).
    • They both were artificially created in an attempt to destroy the main heroes of their respective series.


Crew Statements

Derrick J. Wyatt

Dwayne McDuffie

See Also

Vilgax DagonLucubraConduit EdwardsEsotericaBioidsDronesSquid Monsters
Zs'Skayr CrüjoKuphuluLord TransylMummyViktorYenaldooshiAnur-Mirrored BenAnur-Mirrored CharmcasterAnur-Mirrored HobbleAnur-Mirrored RookMutant Pumpkins
Aggregor Aggrebots
Evil Bens EonAlbedoBad BenBenzarroEon's ServantsMad BenNega Ben
Faction Dr. PsychobosKhyberKhyber's PanuncianMalware
Rooters ServantisPhil BillingsRagnarokSwiftLeander
Mutated Kevin Kevin 11Kevin 11,000Ultimate KevinOmniverse Kevin
Incursean Empire MilleousAtteaRaffMajor GlorffLieutenant RanaSangfroidWay Bads
Forever Knights DriscollEnochPatrickUrienCyrusJoseph ChadwickConnorDagonetDr. JekyllMortonReginaldTwin KnightsSquireCoach FinnDragon RobotForever NinjaSquires
Dr. Animo Mutant FrogMutant HamsterMutant CockatielMutant MammothMutant TyrannosaurusHeatbatMutant SeagullMutant SquidMutant LepidopterranMutant BatMutant Prairie DogMutant HornetMutant ChickensMutant Chicken LeaderMutant KangarooMutant SnailMutant AntsMutant MosquitoMutant GiraffeTechnobugMutant ChupacabrasFrankencryptidMutant SquirrelsCrystal Claws
Psyphon Bug-LiteBouncersBubble HelmetLiamGorvanMinionNightmarish AlienPiscciss Volann PrisonerPickaxe AliensSweet-Eels SparklefunkHooded AlienThunderpigTummyhead
Magic AddwaityaCharmcasterDarkstarPallorfangScrutin
Highbreed Highbreed CommanderDNAliensXenocyteMizaruSimian
Vreedles MaPaOctagonRhomboidParallelogramIsosceles Right TriangleDodyPretty Boy
Bounty Hunters SixsixSevensevenEighteightSynthroidSunderKraabVulkanus
Vengers Billy BillionsCaptain NemesisKangaroo KommandoMazumaSimonsWill Harangue
Lenopan Mr. MannMrs. MannCamille's Ex-BoyfriendMann Family's Bodyguard
Fistrick CorvoHoodlumFistrick's ThugFistina
The Hive Elena ValidusNanochipDecoy QueenEvil BuildingsShip It's Employee
Road Crew Baron HighwayTurbineRoad Rage
Zombozo Acid BreathFrightwigThumbskullZombie Clowns
Great One Enforcer AlienInterpreter AlienLeader Alien
Rojo's Gang RojoAzulAmarillo
Other Villains AntonioBenevelonBlue LeaderBuzzCharles ZenithClancyMayor ColemanCollectimusDr. DoomacusDuaneEvil Way BigGarbage MonsterPrince GyulaHammerHowell WaynerightHulex ColonelHulex WorkersInspector 13JackJarettJonah MelvilleKolarCaptain KorkKrakkenKundoLepidopterran PrisonerMaltruantMino-TogaMissyMorggMutant SeagullsMyceliumNyancy ChanOliver ThompsonPinkyPlant AlienPlant ClonesPoltroonPrisoner 775Red LeaderScooterSeebikSolid PluggSsserpentSubliminoSuemungousaurSunnySurgeonTetramand PrisonerTrans-Dimensional MonsterTrombipulorViolet OffendersKing XarionYetta
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Future Dr. AnimoExo-SkullMot SnikrepSplootSubdoraVilgax
Gwen 10 (What-If?) Vilgax
Alternate Dimension Mad PakmarOrange Offenders
Generator Rex AlphaBlack KnightBiowulfI-BolSkalamander
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