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34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

The Beginning of the End is the thirtieth episode of the third season of Ben 10: Ultimate Alien, and the fiftieth episode overall.


As the final battle between the Forever Knights and Dagon's Esoterica heats up, Ben finds himself caught in the middle of an intergalactic showdown.[CN 1]


As Ben and Gwen are with Kevin in his garage as he finishes making his car submersible, they are attacked by the Esoterica, who are destroying anyone who stands in the way of Dagon's return. They fight off the Esoterica with Ben as Four Arms and Gwen is able to capture one of the members with her mana, as they can't teleport through mana. Kevin interrogates him and they are able to find out that the Flame Keepers' Circle is planning to let Dagon into this dimension.

The team go to the Flame Keepers' Circle headquarters and find out that none of the members are there. Ben transforms into Clockwork and uses his powers to show that they have all left to free Dagon. Meanwhile, Sir George is at the Area 51 fortress, rallying the Forever Knights to fight Dagon. When Ben, Gwen, and Kevin arrive at the location of the seal with the Rust Bucket 3, they find the Forever Knights and the Flame Keepers' Circle at war, and neither side is winning. Ben asks them to land the Rust Bucket 3.

Ben tries to tell the Knights that he is here to help but the Knights refuse to listen and attack them. They force Ben and the team back into the Rust Bucket 3, and Ben transforms into Goop to fight them. After a difficult fight, they are able to defeat them, and Gwen creates a mana shield at the door of the Rust Bucket 3, which was not closed, to prevent the other attacking Knights from coming in.

Gwen then senses Esoterica soldiers in the Rust Bucket 3, but still in between dimensions, watching the team without attacking. Ben convinces Gwen that they must leave the Rust Bucket, and Gwen uses her shield to push the Forever Knights out of the way, as she, Ben, and Kevin exit. Gwen uses her powers to point out where the Esoterica are entering this dimension, and Ben transforms into Fasttrack to knock them out before they can attack. Once that is finished, they proceed to the seal, but realize that they cannot move through the many battles occurring to get there. Kevin has an idea and tells Gwen and Ben to follow him. They fight their way through, reaching several high-tech catapults that the Forever Knights are using. Kevin uses one to launch Ben to the other side of the canyon and he transforms into Heatblast in mid-air and proceeds to the seal. Gwen then remarks in regret that she could have simply teleported him there.

TBotE (345)

Vilgax merged with a Lucubra

Sir George, Winston, and other Forever Knights are approaching the seal. As they get close, Winston informs Sir George that he will protect him. While passing through the caves in which the seal is set, they are attacked by Conduit Edwards, who fires an energy bolt at George while he isn't looking. Winston jumps in front of George and takes the blast for him. George turns around and attacks Edwards, who moves between dimensions for a while, firing at George. George is able to stab Ascalon through Edwards, killing him. George runs over to Winston, who tells him that it was an honor to be his squire, then dies. George says that Winston died not a squire, but a knight, and that his death will not be in vain. He runs forth to the seal.

TBotE (491)

Dagon's dimension

George reaches the seal and hears Dagon's voice. Dagon claims that he will rule this dimension and take over it. The seal cracks and Dagon lets out a minion of his, to destroy George. This turns out to be Vilgax, who has been fused with a Lucubra and reborn with Dagon's power. The other Forever Knights attack Vilgax, but he easily defeats them. At this moment, Heatblast bursts through the ceiling of the cave and lands inside.

Vilgax then moves forward towards the seal and breaks it, though it remains intact and in place. The cave wall around it crumbles and reveals Dagon's dimension behind it.

Noteworthy Events[]

Major Events[]

Minor Events[]



Aliens Used[]


Ben: (when the Forever Knights are attacking them) Maybe we can still try to talk some sense into them?
Kevin: Sure, I'll make coffee.

Naming and Translations[]

Language Name Origin
Hungarian A Vég Kezdete The Beginning of the End
Polish Początek Końca Beginning of the End
Portuguese (Br) O Começo do Fim The Beginning of the End
Romanian Începutul Sfârșitului The Beginning of the End
Spanish (HA) El Principio del Fin The Principle of the End
Spanish (Spain) El Principio del Fin The Principle of the End


Voice Actor Role(s)
Yuri Lowenthal Ben Tennyson
Forever Knight #2
Ashley Johnson Gwen Tennyson
Greg Cipes Kevin Levin
Dee Bradley Baker Clockwork
Four Arms
John DiMaggio Conduit Edwards
James Remar Ultimate Vilgax
Patrick Cavanaugh Sir Winston
Esoterica #1-2
Peter Renaday Sir George
Forever Knight #1



  • When Ben is about to transform into Four Arms and Goop, the Ultimatrix's core pops up without Ben activating it.
  • In the establishing shot of Area 51, there are no Forever Knights, but there is an army in the next shot.
  • When Four Arms sits, his underwear is red. Kevin's car is also missing in this shot.
  • Before Four Arms reverts to Ben, he is taller than usual.
  • Clockwork's hologram faces Ben at an angle.
  • When Clockwork showed the past in The Eggman Cometh, Gwen and Natalie spoke backwards, but when Clockwork shows the past this time, Conduit Edwards' mouth moves without any audio being heard.
  • The CGI models of the Forever Knights do not have the infinity symbol on their chest.
  • During the battle between the Forever Knights and the Esoterica, one Forever Knight pops into frame out of nowhere.
  • When the Forever Knights charge towards the Rust Bucket 3, they are smaller than usual. Furthermore, there is a layering error, where one Forever Knight runs under the Rust Bucket's wheel.
  • Goop's hologram faces away from Ben.
  • When Goop is cut into half by the Forever Knights, even his Ultimatrix symbol is cut.
  • When Winston is hit by Conduit Edwards' energy blast, there is no crater. However, when Sir George goes to his side, Winston lies in a crater.
  • When Fasttrack punches an Esoterica soldier, two soldiers are shown for a frame.
  • When Heatblast lands in the depression he created, the hole is about his waist level. However, in the next shot, it is at his knee and in the shot after that, it is almost at his chest.
  • The end credits misspell Dagon's name as "Daigon".


T.J. Collins[]

Cartoon Network[]

Ben 10: Ultimate Alien Episodes