Not as many mutants here as some places, but it's got knights in plate armor riding giant dalmatians. Read more about them in this previous post.
Vaughn Bodē's titular character is out for revenge the man who killed his parents. There are mutants and aliens a plenty.
Everybody knows this one, right? If not, start reading it here.
Mutant mayhem after Martians invade earth in a second war of the worlds. And its all been collected!
Hercules UnboundMashup Thor and Kamandi and you get this short-lived series. In fact, it ties in to both Kamandi and Atomic Knights.
A half-human, hunter fights against mutant-kind ("goblins") on an irradiated future earth. Dark Horse has put it out in a nice collection.
In a devastated N'Yark (that seems like the inspiration for future of Thundarr) the mighty Samson fights a lot of improbable mutants. Read more about it in this post I wrote a while back.