OK, they’re a bit dorky, but we kinda like ’em :-).
The Challengers of the Unknown came shortly before the Silver Age started. In some ways they were a forerunner, but many of their adventures soon came across as goofy and dated.
The League of Challengers-Haters, as you might have guessed, are a super-group made up of the Challengers’ enemies. But only Multi-Man ever amounted to anything, really – and mostly as a comedy character.
For more, see the individual writeups for the members :