Reborn as a Shoggoth But With Special Abilities (Dropped)

He doesn't remember who he was, some bits and pieces but that's the extent of what he knows of his personal life. Upon such realization, he names himself and begins his new life. Disclaimer: I don't own supergirl, the flash, legends of tomorrow, or the arrow. I own my OC and I'm pretty much going to write this when I feel like it.