1. Challengers of the Unknown: I’d take the name and reimagine the concept as DC’s multiverse and time travel themed series. The Cast would be made up of any superhero that has inter-dimensional and time travel as a major part of their lore.

Cast
Mr. Terrific
Powergirl
Booster Gold
Just to name a few. A lot of these characters are somewhat popular but perhaps not popular enough to hold a book for themselves.