How does Marvel comics exist in the Arrow-verse?

[Cyke]

Killer frost made A Hulk joke too. It's just a bit of fun, your being way to critical. My favorite cross company joke outside of all Deadpools constant shitting on BvS and Green Lantern is Lego Batman. The Ironman sucks password had me dying in that movie.

I hated Green Lantern like everyone else, but I still had a big grin when Berlanti essentially "canonized" it in Crisis.

It was one of his first DC works, after all. If I were him and I had the opportunity, I'd do it, too.