Set during the main storyline(?) of Overwatch.

Sombra is part of the terrorist organization known as TALON, having been part of the team tasked to assassinate Katya Volskaya, which failed. She seems to have a toe in every pond, loyalty reserved for herself as everyone else is just a stepping stone to the much bigger conspiracy she is keen on solving. 

After Vendetta takes over, Sombra leaves Talon to pursuit her own goals and is now a free agent.

Set during the years Sombra spent as a member of the gang, going under the alias Azucar. She is anywhere between the ages of 15 - 21. 

More to be added.

Set during the years Olivia was beginning to hone her skills. Olivia is anywhere between the ages of 7 - 14. 

Olivia Colomar is just one of the many orphans that were left behind in the wake of the Omnic Crisis; easily forgettable and invisible, and while most would consider such treatment cruel, it only helped further Olivia’s growing skills in hacking and blackmail. No one would suspect an orphan, let alone a child her age, which helped her sell an image of innocence that was very far from the truth.