Bloodstone is a fictional character appearing in American comic books published by Marvel Comics.

Avengers Arena is a comic book series published by Marvel Comics that debuted in December 2012 as part of the Marvel NOW! relaunch. The series shows 16 young heroes from the Marvel Universe and pit them against each other in a kill-or-be-killed, reality-show-like scenario in Murderworld run by Arcade. The series ended with issue 18 and was followed by a sequel titled Avengers Undercover that dealt with the survivors infiltrating the Shadow Council's Masters of Evil.