NSFW Overwatch Headcanons
Tracer: Finishes really quickly, then Recalls so she can... finish really quickly again. Likes to talk during the act, though the quality of conversation is questionable at best; makes up for it with quantity instead.
Widowmaker: The dominatrix to end all dominatrixes. Her ability to set up cameras everywhere also feeds into her voyeuristic tendencies.
McCree: Relatively normal interests, though he likes to throw in some ropeplay from time to time. Has yet to figure out the phrase "IT'S HIGH NOON" doesn't quite work in the bedroom the way it does on the battlefield.
Torbjörn: All about machinery. His partners are barely able to walk after.
Lùcio: Likes to set the mood with music. His music, namely.
Bastion: I don't even know why you'd think he's an option.
D.Va: Into doing it where she shouldn't. On more than one occasion, she's snuck a toy inside her mech and played with it when she had some downtime. Otherwise, she's exceptionally skilled with her hands. Fringe benefit of being a professional eSports athlete.
Soldier 76: When he was younger, maybe, but now? Nah. He's been out of practice for a while.
Mei: If you're a lonely dom looking for a sub, then boy, do I have the girl for you.
Genji: Power bottom in either direction. He's not about to let that ass go to waste.
Mercy: Vanilla as hell. Lots of kissing. Lots of cuddling afterwards.
Winston: No. Not with humans, anyway.
Reaper: The greatest lovemaker of all time, able to make women go down quivering to their knees with only a glance... kidding. You really think a guy like Reaper can score with anyone?
Junkrat: Wild, crazy, experimental, as likely to hurt himself as he is his partner.
Roadhog: I'm afraid his heart only beats for one person...
Hanzo: The best of everyone here. Makes sure to have good foreplay, listens to his partner, caters to their every need. Liable to cry afterwards while muttering something about honor.
Reinhardt: Still able to turn the heads of women half his age when he's out of his armor, but the whole "chivalric code" thing tends to prevent him from going to the younger crowd. Once he does find an older woman, he's an utter square. A handsome, muscular, bearded square, but a square nevertheless.
Zarya: On top. Always. Doesn't matter who. Strong oral inclinations.
Pharah: Has to be in control 100% of the time. A dom to rival Widowmaker. Likes to roleplay as a general.
Symmetra: Can get real creative with her hard light constructs if she wants to. Rather big "if", though.
Zenyatta: Thinks this whole thing is silly and would rather be meditating elsewhere.