Giffen: It's basically, "Whatever happened to Fast Forward from Arcudi's Doom Patrol?" You know, the guy they jokingly called Negative Man because of his attitude?
It's sort of involves him and alternate realities and things that can come through doors that are open in alternate realities.
So we're having some fun with Doom Patrol doppelgangers. Feral Rita, and Nazi Larry, and Steampunk Cliff.