Slapback turned out to be a complete copy of Ditto (and to an extent, Echo-Echo and Bullfrag), but he at least has a few minor differences to make him unique.It tries too hard to be hip by using memes like "get rekt!", only to fail miserably.While not bad, the characters tend to have odd-looking expressions, similar to the 2016 Powerpuff Girls reboot.Stinkfly's new design is especially bad.While Upgrade's design is fine, for some reason, it has the color of purple through out the body rather than just white and green. Some of the alien designs are pretty bad, and they look like MAD parody designs.
He acts more like a 6-year-old or a toddler than a 10-year-old. On top of that, Ben has also been flanderized into an annoying, over-the-wall protagonist, which fits more to Beast Boy from Teen Titans Go than Ben's original counterpart.On the topic of Gwen, she and Ben actually get along better than they did in the original, which eliminates character development and chemistry between the two, despite it being a slight improvement over the original show.Gwen has been flanderized from a sweet, fun-loving girl who cared for her cousin despite the occasional squabble to a complete goody two-shoes and Mary Sue.While Ben Tennyson's and Gwen Tennyson's designs are passable, some of the other human character designs are really poor, especially Grandpa Max's, who looks worse than his Omniverse counterpart.The new voice actors for established characters (and Ben's aliens), while still passable, aren't as appealing as the originals.And speaking of which, the only reference to Wildmutt is a mask seen in one episode.However, in Ben 10 Versus the Universe: The Movie, there are alien prisoners in Null Void who resembles Wildmutt, Ripjaws, Ghostfreak, Blitzwolfer, and Eye Guy.A lot of aliens from the first four shows who do not appear in this show because they aren't even seen or mentioned and they are absent, this includes (but not limited to) Wildmutt, Ghostfreak, Upchuck, Lodestar, Brainstorm, Ditto, Armodrillo, NRG, Terraspin, Eatle, Clockwork, Juryrigg, Feedback, Gravattack, Crashhopper, The Worst, Pesky Dust, Walkatrout, Eye Guy, Frankenstrike, Buzzshock, Arctiguana, Blitzwolfer, Snare-oh, Rocks, Squidstrictor, Echo-Echo, Swampfire and Nanomech, among many others.