Doctor Stephen Vincent Strange M.D., Ph.D. is the Sorcerer Supreme and a Master of the Mystic Arts. Strange became hellbent on resurrecting his late girlfriend Christine Palmer, after she died in a car accident, which ultimately resulted in the destruction of his entire universe. Floating for a time in a parcel of land protected by a bubble of the Mirror Dimension's magic, Strange was later recruited by The Watcher to help him save the Multiverse from Ultron. Strange, alongside Captain Carter, Thor, Erik Killmonger, Gamora and Star-Lord, were brought together and formed the Guardians of the Multiverse. Once Ultron was erased by Arnim Zola, both Zola and the traitorous Killmonger tried to gain the Infinity Stones, leading to Strange trapping them in a shrunken down time bubble. Strange was then instructed by the Watcher to watch over the prisoners, a role Strange took gladly.