Marvel Finally Has a Hero as Powerful as Mephisto – Sister Sorrow Explained
Warning: Spoilers ahead for Bring on the Bad Guys: Mephisto #1!A new hero has come to the Marvel Universe, and this mysterious new bombshell has already proven herself to have power rivaling that of the devil himself, Mephisto, becoming his official adversary upon her grand debut. Mephisto is one of Marvel’s most powerful villains, but with the arrival of Sister Sorrow, the Marvel Universe’s devil has some tough competition.
