I thought this game might work. The player holding the chair selects a character. The challenge for the other players is to guess who the character is. They get twenty questions.
All questions have to have to be framed so as to allow the answer "Yes" or "No". The chair can give extra information if he or she chooses, and frame an appropriate response if neither answer fits.
Players may only ask a fifth consecutive question if four hours have passed since their last one. (Since the guess, not the answer.) The first player to guess the answer takes the chair.
Only characters that have made at least two appearances are eligible. So Franklin Storm is, but not Tomazooma. Only characters that first appeared in US comic books are eligible. So not Captain Britain, Dick Tracy, Tarzan, Thor.
(revisions made to rules)
These are the characters featured so far:
The current round commenced p.32.
Is the character a member of a team?
5.Is the character a member of a team?
Was the character created in or before the Silver Age?
6.Was the character created in or before the Silver Age?
Yes. The character first appeared in the Silver Age, and the story was twice reprinted before the character's second appearance.
Does the character have super powers?
7.Does the character have super powers?
Yes, very much so.
Is the character considered a hero?
8.Is the character considered a hero?
Regarding this revelation: Was the character revealed to be a mutant?
Luke Blanchard said:
Originally, yes; a revelation two decades after the character's first appearance changed that.
9.Regarding this revelation: Was the character revealed to be a mutant?
It's the Tinkerer isn't it?
10.It's the Tinkerer isn't it?
That's a shrewd guess, but no. Actually, the Tinkerer was implied to be an alien on his first appearance, and revealed to be human when he returned.
John Byrne drew my guy at two different points of his career. After the retcon he had him say he was "quite human. Were it otherwise, I would not burn with so human a need for vengeance against the one who has wronged me." As far as I'm aware the contradiction hasn't been sorted out in-story. Apparently he hasn't been seen since the early 90s.