Ultimate Wildmutt

Ultimate Wildmutt is the evolved form of Wildmutt.

Appearance
Ultimate Wildmutt is significantly larger and more muscular than Wildmutt. His fur is maroon-red color. He has small, fin-like growths on his shoulders and his chin is much larger. Furthermore, Wildmutt's quills are gone and have been replaced by 4 huge gray/white spikes running down his back that overlap. Starting as a shark like fin at the head and rising almost into an arc at the back, tapering near the rump. 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. Ultimate Wildmutt gains the ability to speak English, which is a result of his evolution. He also has black outlines over his lips, like Wildmutt in the original series.

Powers and Abilities
It seems Ultimate Wildmutt retains all of Wildmutt's abilities. He has a long tail with a scorpion style horn at the end; its function aside from stabbing is unknown. He is stronger than Wildmutt, with longer claws and he could hold down Prisoner 775 while Wildmutt couldn't. Ultimate Wildmutt is also much larger than Wildmutt; this advantage gives the him the ability to tackle things more easily.

Ultimate Alien

 * Ultimate Wildmutt first appears in Prisoner Number 775 is Missing, Ultimate Wildmutt defeats Prisoner 775.

Appearances

 * Prisoner Number 775 is Missing (first appearance)

Trivia
thumb|right|200px|Ultimate Wildmutt transformation
 * Strangely, Ultimate Wildmutt did not appear in the episode The Ultimate Sacrifice, despite being an Ultimate Form, however, this could be because he wasn't a real alien in the Ultimatrix but a copy of its spieces like the other aliens in the Ultimatrix.
 * Ultimate Wildmutt's roar is similar to the Lucubra.
 * Ultimate Widmutt's appearance is similar to a Fel Hound from World of Warcraft.
 * Ultimate Wildmutt's body structure is similar to Wildmutt mixed with a lion.
 * Ultimate Wildmutt is one alien form of Ben's, who is not on the Ultimate Alien intro; the others are Fasttrack, ChamAlien, Eatle, Jury Rigg, Shocksquatch and Clockwork although this is obviously due to their existence being revealed after the release of the series. According to Dwayne, the intro won't be changed to add in new aliens.
 * Ultimate Wildmutt is more aggressive than Wildmutt, like when he says to Gwen "You can clean up what's left of him" this behavior is quite similar to Rath, except that Ultimate Wildmutt seems to be smarter.
 * Ultimate Wildmutt is one of two aliens to have debuted as a toy before their television debut. The other is Eatle.