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What'ya say, Vilgy? Round 2?

– Ultimate Swampfire to Vilgax.[1]

Ultimate Swampfire is the Ultimatrix's artificially evolved DNA sample of a Methanosian.


Ultimate Swampfire has the appearance of a humanoid tree instead of a walking plant like Swampfire. Ultimate Swampfire's body is dark brown in color, and now has three blue gooey shells containing an organic, blue-colored gel-like solution of napalm on each of his arms and a large one on his back. He also has a smaller pod on his front, through which his face can be seen. Ultimate Swampfire's body is composed of petrified wood.

Ultimate Swampfire wears the evolved Ultimatrix symbol on his chest.

Powers and Abilities

Ultimate Swampfire can ignite napalm in his arms to generate blue-colored flames. These flames are almost two times hotter than Swampfire's, as they can melt through a brick wall[2] and blast apart a Petrosapien's shard projectiles, the latter of which was demonstrated by his sentient counterpart.[3]

Ultimate Swampfire can produce a larger and stronger blast of fire when he puts his hands together. He can also propel himself underwater and in the air.[1]

Ultimate Swampfire is more resistant to damage than Swampfire.

Ultimate Swampfire has lethal fire bombs on his arms which he can throw as weapons.

Ultimate Swampfire can shoot blue projectiles from his hands that can multiply into small blue gas bombs that explode on impact.[1]

Ultimate Swampfire retains Swampfire's abilities to generate seeds and vines.

Ultimate Swampfire seems to be a lot faster than he looks, as seen when he snuck up behind Eon so fast that he was unable to notice him.[4]

Ultimate Swampfire appears to have a degree of underwater Breathing, as he was able to fight underwater with Vilgax's true form.


Ultimate Swampfire is vulnerable to electricity, such as that generated by an Amperi.[2][5]

Like other organic beings, Ultimate Swampfire is vulnerable to being aged to dust by the time rays of a Chronosapien or a Chronian.[4]

Unlike Swampfire, Ultimate Swampfire has not been shown to regenerate.[note 1]


Alien Force

Ultimate Alien


Video Games

Ben 10 Ultimate Alien: Cosmic Destruction

Ultimate Swampfire flew up the Eiffel Tower to battle Sunder and various Null Void aliens. After defeating him, Ultimate Swampfire grabbed the piece of Potis Altiare Sunder stole and jumped from the collapsing Eiffel Tower.

Ultimate Swampfire has firebombs, which he can throw at enemies, by spinning, spread them out around him, or launch them at enemies, homing in on them like missiles. He can also launch a flamethrower-like stream of fire from both hands.

By punching the ground, Ultimate Swampfire can create a large fire blast.

Ultimate Swampfire can fly by launching fire from his palms as jet propulsion.

Like the rest of the other playable Ultimate Forms, Ultimate Swampfire can knock out enemies with a single punch.

Toon Football

Ultimate Swampfire is also a toon football player in Toon Football and also the first Ultimate form to be in Toon Football.


Ultimate Swampfire appears on Vilgax's ship trapped that the player must save.

Project Exonaut

Ultimate Swampfire is a playable Exosuit of the Banzai Squadron on Project Exonaut. His Weapon Mod decreases the Marksman's clip to 3 but increases its range, damage, and speed. Ultimate Swampfire is available for purchase at level 30 for 2000 coins.

Naming and Translations

Language Name Origin
Arabic سوامب فاير الأقصي Swampfire Maximum
Bulgarian Ултра Блатоплам From ултра, ultimate; блато-, swamp and -плам, fire
Chinese 终极沼泽火 From 终极 (Zhōng Jí), ultimate, and 沼泽 (Zhǎo Zé), swamp, and (Huǒ), fire
Dutch Ultieme Moerasvuur From ultieme, ultimate and moerasvuur, Swampfire
French Ultimate Régénérator From ultimate and régénerer, regenerate
German Ultimativer Schlammfeuer From ultimativ, ultimate, and schlammfeuer, mud fire
Greek Απόλυτος Βαλτοφωτιάς From απόλυτος, ultimate and βαλτοφωτιάς, swampfire
Hungarian Láplövő X From láplö, swamp, övő, belt and X
Italian Ultra Fangofiammante From ultra, ultimate and fangofiammante, flaming mud
Korean 얼티메이트 머드파이어 From "얼티메이트", ultimate and "머드", mud and "파이어", fire
Norwegian Ultimat Myrild From ultimat, ultimate, myr, swamp and ild, fire
Polish Ostateczny Szlamfajer From ostateczny, ultimate and szlamfajer, Swampfire
Portuguese (Br) Fogo Selvagem Supremo
Fogo Fátuo Supremo
From fogo, fire, selvagem, wild, and supremo, ultimate
From fogo fátuo, swampfire, and supremo, ultimate
Romanian Flacăra Vie X From flacăra vie, live flame and “X”
Russian Ульти Пламенный
Высший Пламенный
From ульти пламенный, ulti flaming one
From высший пламенный, ultimate flaming one
Spanish (HA) Fuego Pantanoso Supremo From fuego pantanoso, swampfire, and supremo, supreme
Spanish (Spain) Ultimate Fangoso From fangoso, swampfire
Swedish Ultimata Träskeld From ultimata, ultimate, and träskeld, swampfire
Turkish Ultimate Çamur Ateş From ultimate, ultimate, and Çamur Ateş, mud fire
Urdu Ultimet Swampfiere From ultimet, ultimate and swampfiere, swampfire


  • Ultimate Swampfire is the first Ultimate Form to be used by Ben, which is a reference to Ben transforming into fire-based aliens first: Heatblast, Swampfire, and now Ultimate Swampfire.
    • He is also the only Ultimate Form used by Ben to appear before Ultimate Alien.
  • Ultimate Swampfire is the only Ultimate Form to be temporarily destroyed and removed from the Ultimatrix.
  • In a beta cover for an issue of Cartoon Network Action Pack, Ultimate Swampfire was colored red with yellow napalm shells, resembling Heatblast.
  • Ultimate Swampfire's fire blasts are similar to the large blasts of flame created by Azula in the Avatar: The Last Airbender series.
  • Ultimate Swampfire was the Alien of the Month in October 2011.
  • Ultimate Swampfire was Derrick J. Wyatt's favorite Ultimate Alien because he liked how he looked the most.[DJW 1][DJW 2]
  • Had Ultimate Swampfire appeared in Omniverse as one of Albedo's transformations, Derrick would have probably redesigned him to look a little more creepy, like when Ichabod Crane rides through that haunted forest.[DJW 3]
  • If Ben 23 were to have an Ultimatrix and use its Evolution Feature on Mr. Mucky, the resulting transformation would be called "Monsterizered Mr. Mucky".[DJW 4]


  1. On the contrary, Matt Wayne believes that regeneration is a trait that natural selection would favor.[MW 1]


Matt Wayne

Derrick J. Wyatt

See Also

Introduced in Ben 10 ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohSpitterStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Alien Force Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarNanomechRathSpidermonkeySwampfire
Introduced in Ultimate Alien AmpfibianArmodrilloChamalienClockworkEatleFasttrackJuryriggNRGShocksquatchTerraspinWater Hazard
Introduced in Omniverse AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Future Aliens SandboxShellheadSnakepit
Ultimate Aliens AlbedoArctiguanaBenBig ChillCannonboltEcho EchoGravattackHumungousaurRathSpidermonkeySwampfireWay BigWildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Concept Fusion Aliens GravadactylXLRG
Other Aliens in Official Media 10/10/10 Box AliensAntigraviteslaBob the BlobCartoon Network AlienEon (Retconned)MoyoInvinciblePlantapocalypsePortalerRocksShadowmanSquidstrictorStretcheleo