>>30270925some of the ultimate evolutions were okay especially when they changed how the original alien worked in the first place.
Ultimate Swampfire for example is more treelike instead of looking like plant stalks.
Ultimate Spidermonkey turned into a gorilla.
Ultimate Echo Echo gets big and loses its duplication thing.
They hyped up the ultimate human evolution for a while, like Ben's eyes turning pink for a bit after he changes back.
What it turned out to be is that Ben (as an adult) just stays a human, calls out the alien he wants powers from, and gets their powers, without transforming. Even if it's something he biologically can't do, like fly
at least Omniverse established the 'absolutely canon' future ben, who has the Biomnitrix, which lets him to become fused aliens instead which is far more interesting