Squirrel Girl's defeat of Thanos (in her own book) is supposedly canon, but I don't personally accept it as such since it's so unbelievably implausible.   :P<br/><br/>I hadn't heard about Deadpool and Death, though.  Not sure about that.<br/><br/>DD:  IMO... it's ok for villains... but heroes, not so much.  I hated World War Hulk and the Sentry, for example.  Heck, I love Thor and I hated him when he had the Odinforce.