Ultimate Panucian

Ultimate Panucian is the ultimate version of Khyber's Panuncian, the predatory species of Splixons, Ditto's species. His only appearance is in the Ben 10: Omniverse episode For A Few Brains to escape Upchuck's stomach. The form is accessible due Albedo upgrading the Nemetrix off-screen.

Ultimate Panuncian in For A Few Brains More

Appearance

Ultimate Panuncian resembles normal Panuncian but larger and having bright red fur. There is missing patches of fur revealing his pink skin. He now has sharp silver spikes on his tail, fangs, horn and his back. He wears a metal helmet that covers the top of his head and has sunken red eyes. The Nemetrix is around his neck and doesn't appear to have any evolutionary spikes like regular Ultimate forms.

Ultimate Humungousaur

Ultimate Humungosaur is the evolved of a Vaxasaurian  who first appeared in the Ben 10: Alien Force episode The Final Battle: Part 1 where he defeated Ben as Humungosaur.. He returned in Too Hot to Handle where he hold up a collapsing cave. He was voiced by Dee Bradley Baker in Ben 10: Alien Force and Ultimate Alien and by John DiMaggio in Ben 10: Omniverse.

Appearance

Ultimate Humungousaur is a green, 20-feet tall muscular creature with a large spiked shell and a mace-like tail. His chest is blue and has five spikes on the edge. He wears a blue helmet with two black spikes at the sides and three smaller grey spikes on top. He has sharp black nails and silver barrels at his knuckles. His hand can transform into a gun with five holes, four on the side and one in the middle.

Ultimate Echo Echo

"I'll try and make this as painless as possible, SONIC DOOM!" - Ultimate Echo Echo in The Absolute Enemy: Part 2. 

Ultimate Echo Echo in And Then There Was Ben

Ultimate Echo Echo is the evolved version of Echo Echo accessed by the Ultimatrix. He first appeared in Map of Infinity where he took down two Necrofriggians and defeated Cerberus. He reappeared in the Ben 10: Omniverse episode The Ultimate Heist by Albedo to counter Eye Guy before changing into Ultimate Spidermonkey. He is voiced by Dee Bradley Baker in Ben 10: Ultimate Alien and never spoken in Ben 10: Omniverse.

Ultimate Wildmutt

"Ultimate Wildmutt!" - Ultimate Widlmutt shouting his name, much to the disappointment to Gwen in Prisoner Number 775 Is Missing

Ultimate Wildmutt in Prisoner Number 775 Is Missing

Ultimate Wildmutt is the evolved form of Ben's Vulpinmancer form, Wildmutt. He first appeared in the Ben 10: Ultimate Alien episode Prisoner Number 775 Is Missing where he pinned down Prisoner 775. He is voiced by Dee Bradley Baker.

Appearance 

Ultimate Wildmutt has a muscular lean build and is larger than Wildmutt. He has a large chin and a long red tail with a white stinger-like end and has long white fur sticking out along his back. He has black lips, sharp claws and has four slits on the side of his head for smelling. He wears the evolved Ultimatrix on his chest, which is usually faced downwards due to him standing on all fours.

Ultimate Swampfire

Ultimate Swampfire is an evolved Methanosian who was first used in the final episode of Ben 10: Alien Force; The Final Battle: Part 2 where he battled Vilgax. He returned in the Ben 10: Ultimate Alien episode Ultimate Aggregor where he takes down robot henchmen in Los Soledad. Like most aliens in Ben 10: Alien Force and Ultimate Alien, he is voiced by Dee Bradley Baker.

Ultimate Spidermonkey

Ultimate Spidermonkey in Ben 10: Omniverse

Ultimate Spidermonkey is the Ultimate Form of Spidermonkey. He is an evolved Arachnichimp who first appeared in the Ben 10: Ultimate Alien episode Fame, where he defeated Bivalvan. He was used by Albedo in the Ben 10: Omniverse episode The Ultimate Heist where he battled Ben as Four Arms before being defeated by Argit.

Ultimate Arctiguana

"Give me Azmuth's brain!" - Ultimate Arctiguana's first and only line in the franchise.

Ultimate Arctiguana is the evolved version of a Polar Manzardill. He only appeared in the Ben 10: Omniverse episode For A Few Brains More where he shoots ice at Ben, Rook, Max and Azmuth. He is voiced by Eric Bauza. Ultimate Arctiguana design is based on the Pokémon Blastoise. 

Appearance

Ultimate Arctiguana now has maroon armor covering his arms, torso and legs. He is also larger and has pale blue skin. Ultimate Arctiguana has three tendrils underneath his chin  and two black "whiskers" that goes from his face to his mouth. His bottom set of teeth are also visible. He has two red eyes and has blue ice-like armor on his shoulders, back and elbows. He has two large cannons on the side of his back and the evolved Ultimatrix, which has four uneven spikes, on the ice armor on his back. 

Ultimate Rath

"I love the smell of vaporised Azmuth in the morning" - Ultiamte Rath in Malgax Attacks

Ultiamte Rath is the evolved version of an Appoplexian. His first and only appearance was in Ben 10: Omniverse in the episode Malgax Attacks, where he was used by Albedo to try and kill Azmuth. He is voiced by John DiMaggio. Ultimate Rath doesn't give a personality change due to Albedo's high intellect.

Appearance

Ultimate Rath is much more muscular and top heavy, he also slouches slightly. Ultimate Rath has white fur with red stripes and tan pink skin. He has three fingers with sharp nails and two claws on each hand. He wears a red jacket with red eyes and yellow teeth decorations as well as a black fur coat with three red spikes potruding it around his neck. Ultimate Rath wears a white belt, red wrist bands and black shorts. The evolved Ultimatrix, which has four long spikes, is located on his chest. 

Ultimate Way Big

Ultimate Way Big is an evolved To'kustar who only appeared in the last episode of Ben 10: Ultimate Alien, The Ultimate Enemy: Part 2. He is voiced by Dee Bradley Baker.

Appearance

Ultimate Way Big is much larger compared to his base form. His main body, arms and neck are blue while his legs, face, chest, hands and fins are white. His shoulders, wrist, cheeks and underside of his forearms and fins are red. Ultimate Way Big has two horns on the sides of his head and his fin is much longer. Like every Ultimate alien, the evolved Ultimatrix symbol is on his chest.

Ultimate Gravattack

 "Let's see how you like it!" - Ultimate Gravattack's first words in For A Few Brains More

 

Ultimate Gravattack is the evolved version of a Galilean from the planet Keplorr who was only used by Albedo in the Ben 10: Omniverse episode For A Few Brains More. He is voiced by David Kaye. The small planets that surrounds Ultimate Gravattack is based on the Pokemon Koffing.

Appearance

Ultimate Gravattack's body is much rounder compared to Gravattack and no he longer has legs. His core is now located inside his mouth, with the red swirl visible whenever he opens it. Ultimate Gravattack's skin is much more jagged and has large spikes of varying lengths protruding from his body. His rocky skin is purple in color while his eyes and core are red. There are three small planeloads orbiting around him which have two red eyes and large teeth. The Ultiamtrix symbol, which has six small spikes like Ultimate Spidermonkey, is located on his "chest". 

Ultimate Cannonbolt

"Maybe I got something that could work better!" - Cannonbolt before assuming his Ultimate form in Too Hot to Handle

Ultimate Cannonbolt is the evolved version of an Arburian Pelarota. Ultimate Cannonbolt first appeared in the episode Too Hot to Handle where he held P'andor in place while Kevin locks him in his containment suit. Ultimate Cannonbolt is voiced by Dee Bradley Baker.

Ultimate Albedo

"Now I see the universe for what it is: We are all dust, bound by one enormous, universal force. No, not universal, not even multiversal, this omniversal force continues forever, in every direction through every reality. My lust for power, my jealousy of Azmuth, it isn't just evil, ultimately; it's pointless. I could never truly destroy you. You would only have not been not unexistent in what could have not now been the past, present, and partial future. To tear down and destroy is of no consequence or quality; to create is divine."  - Ultimate Albedo in For A Few Brains More

Ultimate Albedo is the Ultimate version of Albedo's Galvan form. He was first used in the Ben 10: Omniverse episode The Ultimate Heist where Albedo was able to assume the form after completing his Ultimatrix. Ultimate Albedo would then be the main alien Albedo would use in his next few episodes, where he steals Azmuth's intelligence. Ultimate Albedo is voiced by Eric Bauza.

Ultimate Big Chill

"Now it's only you, me, and fire that's so cold it burns" - Ultimate Big Chill in Hit 'Em Where They live

Ultimate Big Chill is the evolved version of Big Chill. He first appeared in the Ben 10: Ultimate Alien episode Hit 'Em Where They Live where he defeated Vulkanus and his Pickaxe Minions. In The Ultiamte Sacrafice, Ultimate Big Chill, among other Ultimates, became sentient and tried to kill Ben. He is voiced by Dee Bradley Baker.

Appearance

Ultimate Big Chill looks similar to Big Chill, but he is now red in color and his wings, eye crests and antenna have a flame design. When his wings are folded into a cloak, the flame design is gone. The Ultimatrix is located on Ultimate Big Chill's chest.