Dr Strange.
High concept. Supreme sorcerer, supreme ass.
Trouble. Broken hand and broken surgical career.
Aspects. Master neurosurgeon, pain is my constant companion, top student of the ancient one.
Skills. Scholarship 5, Athletics 5
Discipline 4, fists 4
Lore 3, Endurance 2
Presence 2, Rapport 2
Survival 1 weapons 1.
Super human speed (-4), sponsored magic (-4) allows you to use athletics or fists as a substitute for conviction for spell casting and use portal magic and astral projection and conjuration of weapons which can be used with fists. Item of power, cloak of levitation (+2) granting an upgrade in speed, Stunt doctor of neurosurgeon (-1). Chest deep, 1 refresh left.
By the end of the movie he's probably got a couple more skill points, which he could use to round out his skills as sorcerer, and probably gets another refresh and so gets a new stunt, mystic trappings, allowing him to use scholarship for arcane research (representing him actually reading the warnings on the books now).
Superhuman speed represents his portal talent, and using a fate point he can declare a portal to another region that's emotionally close to him, or freely travel between safehouses of their order. He can do nevernever style stuff thaumatology with the speed of evocation. The time infinity stone is a plot device, and has independent stats and powers of its own.
Note that he is mediocre at driving.
The doors would be a lore +3 placing an aspect on the wielder to make them mythically fast, +12 for mythic speed, +x for duration, and would require an aspect and a sponsored magic relating to portal magic to create.