Ok, so I was seeing a lot of Brother-Sister art of Sombra and McCree with Papa Reyes, and lots of sibling rivalry. So I was like, ‘What if McCree met baby Sombra while they both were in their respective gangs and sorta decided to adopt this adorable haughty bossy girl who wants to hack the world as his little sister?’ or more like ‘What if Sombra decided to use this dumb cowboy who was cooing over her adorableness as hired muscle, cause she is small but she got to hack everything, so he might be useful. And bursts of brotherly overprotectivness were nice useful. Very useful. and nice.’
Tho I haven’t decided if it was McCree who traveled to Mexico, or Sombra who traveled to America. And I have absolutely no idea about the age difference, tho I imagine Sombra is the same age as Lucio, Tracer and such? And I think McCree from the ref pic I took is somewhere 18-20-ish?
Also imagine them meeting Reyes for the first time and him recruiting them into OW, and all the following consequences.
Another though for a sad AU where they run away from both their gangs and traveled together for several years, before being separated and then reuniting on the battlefield with Sombra working for Talon and McCree with underground OW.