Magog gets his own logo in what I think is Kingdom Come's font, in 2009's Brave and the Bold #23, "Shadows of Tomorrow" Story and art by Dan Jurgens, finishes by Norm Rapmund.
When Rip Hunter returns from the future with an intruder, and a torn black S-shield, he mutters the "Magog" to his partner, Booster Gold. Booster goes into the future for a look, but only gets a peek of future devastation before Rip pulls him back. Booster complains he's from the future and already knows a lot, but Rip tells him he doesn't know everything. Booster decides if he can't see Magog's future, he can investigate him in the here-and-now.
Booster is appalled, but Magog turns his nose up at him as a "lightweight." Still, for his tough talk, Magog had missed a guy with an RPG and some hostages, which Booster had to take care of. He also has Skeets match the dead man's switch frequency, so Magog doesn't have to keep holding a severed arm and would be free to throw down. Before Magog can try to feed Booster his teeth, Rip shows up to tell Booster he can't fight Magog now, since he has a role to play in the future. (Killing the Joker, maybe?)
This isn't a bad issue, but it's all set-up! I wanna see some fighting! Especially since Magog is a tool. I have a DCUC Magog figure, purchased in a case with S.T.R.I.P.E, and I've had a strip in mind for him for years that I haven't gotten around to...