I thought X-Men 97' season 1 had some good and bad, but more good than bad. I did watch X-Men the Animated Series afterwards and I thought the original 1992 show was better. I am both excited and concerned for X-Men 97' season 2 as it could be better or worse than season 1.
Holocaust also known as Nemesis maybe? Holocaust technically has appeared in the Marvel Cinematic Universe multiverse via X-Men 97' being connected to One Man's Worth part 1 out of 2 where he made a cameo, but he hasn't appeared in the main Sacred Timeline.
War: Omega Red
Pestilence: Mister Sinister
Famine: Mystique
Death: Sabertooth
I haven't watched Wolverine and the X-Men so I can't help too much. Sentinels did turn against non-mutants in media such as X-Men the Animated Series from 1992 and Marvel vs Capcom so maybe?
I remember A-Bomb was in Lego Marvel Super Heroes 1 and he was done well.
Does the Fantastic Four count or no?
Apocalypse
Carnage
Cameron Hodge
Red Skull
Jigsaw
I am interested in X-Men 97 season 2, Daredevil Born Again, and Fantastic Four: First Steps. I have heard and seen predictions that X-Men 97 season 2 could have world building and character assassination issues, but I hope not.
Captain America
Rogue
Gambit
Wolverine
Thor
Odin
Rick Rojatt also known as the Human Fly
I kind of picked the last three at random. I tried to avoid picking villainous characters such as Apocalypse and Carnage.
I agree with Rogue and Gambit for example. Marvel technically has done Dune comics and I think Paul Atreides could work as a fighting game character. Marvel has done 1970s Star Wars comics so I think Luke Skywalker, Han Solo, and Darth Vader could work as guest characters.
https://marvel.fandom.com/wiki/Najma_(Earth-199999) Would Najma from the Ms. Marvel show count? She was apparently a loose adaption of a non-villainous character from the comics named Bushra. I found her death scene comedic, but I didn't think her sympathy and redemption was earned.
1. Mister Fantastic
2. Rogue
3. Spider-Man
4. Namora
I would get Megamind, Walter White from Breaking Bad, Sheldon Cooper from The Big Bang Theory, and maybe Diavolo from JoJo's Bizarre Adventure for the Illuminati. I think Rogue could work, but the criteria is the smartest and I am unsure if she is smart enough.
The Wall and the Spider-Buggy
They got into a relationship with Sandman
People hit each other with rocks and sticks
The games are canon via the multiverse
Rob and shoot people