Doctor Octopus is regarded as one of Spider-Man's most infamous enemies. He has been cited as the man Peter might have become if he had not been raised with a sense of responsibility. He is infamous for defeating Spider-Man the first time in battle and for almost marrying Peter's Aunt May. He is also the founder and core leader of the Sinister Six, and has referred himself as the "Master Planner". (" If This Be My Destiny...! ") Later depictions revealed him in Peter Parker's body where he was the titular character from 2013 to 2014. In 2018, he returned as the Superior Spider-Man in a series written by Christos Gage and illustrated by Mike Hawthorne.