Originally Posted by
bat39
My idea is...Verse.
Verse is a college student interning at STAR Labs when, during an accident he gets exposed to tachyon particles. These give him a unique relationship with the Multiverse, enabling him to tap into the abilities and memories of his Multiversal counterparts. It turns out that many of Verse's doppelgangers across earths and timelines have led extraordinary lives - from being great inventors, industrialists, philantrophists to being superheroes, supervillains or criminal masterminds. He's unable to control his abilities at first and taps randomly taps into the memories and powers of some doppelganger or the other, getting overwhelmed and sometimes losing his sense of self. Amidst a flood of memories and personality traits, not to mention abilities (both metahuman and normal) from his multiversal counterparts, Verse is unsure of who he wants to be and what is his destiny...and whether he's even good or evil.
Oh, and the more he uses his powers, the more he creates multiversal/timeline rifts that cause people, usually villains, from these other realities to pop up on Earth 0. Or to transport him to one of these other earths.
His abilities also give Verse a weird relationship with other superheroes once he starts to encounter them. For instance, he might be hanging out with Superman when he suddenly remembers how, on one earth, he was a henchman for Ultra-Humanite who was clobbered by the Golden Age Superman in 1939, while on another earth he was a member of the Teen Titans who fanboyed over Superman. And so on.