By Video Games
Ben 10 Ultimate Alien-- ULTIMATE WILDMUTT TRANSFORMATION--
Ultimate Wildmutt is significantly larger and more muscular than Wildmutt. His fur is a maroon-red color. He has small, fin-like growths on his shoulders and his chin is much larger. His quills are gone, and have been replaced by 4 huge gray spikes on the back of his neck. He now has a small tail with a gray spike on the tip of it. His teeth are now slightly larger. His claws are now gray. Unlike original Wildmutt, Ultimate Wildmutt gains the ability to speak English, which is the result of its evolution. He also has black outlines over his lips, like Wildmutt from the original series.
He retains all of his abillities from his original form (except for shooting quills, which he presumedly can no longer do), including seeing without eyes and animal strength. He has gained a long controllable tail with a scorpian style stinger at the edge, its function aside from stabbing is unknown. He is stronger than Wildmutt, with longer claws and he could hold down the prisoner while his regular form couldn't. He has also removed a weakness of his original form,as now he can talk. He is also much larger than the original Wildmutt, this advantage gives the Ultimate Wildmutt the ability to tackle things easier.
The roar of Ultimate Wildmutt is similar to Lucubra.
The voice of Ultimate Wildmutt is smiliar to that of Ultimate Humungousaur.
Ultimate Wildmutt is the first from Ben's original aliens to appear in its ultimate form and also the second alien that evolved from an alien in the original series (the first being Ultimate Cannonbolt) and the first of the original 10.
It was shown at the 2011 Toy Fair that he can talk, while his original form can't; this is due to it being an evolved form of Vulpimancer/Wildmutt.
His appearance is similar to a Fel Hound from World of Warcraft.
One of the big differences between Wildmutt and Ultimate Wildmutt is that Ultimate Wildmutt has a long red tail with a stinger.
His body structure is similar to Wildmutt mixed with a lion.
Now instead of growling he can roar.
Is one aliens forms of Ben, who is not on the Ultimate Intro alien, the others are Eon, New Alien and ChamAlien, although this is obviously Due to its existence was revealed after the release of the series.