For real though, what is that melody?
Overwatch - Sigma

Blizzard revealed a new character coming soon to Overwatch. Their name is Sigma and, according to the Overwatch Twitter, he is an "eccentric astrophysicist." Sigma's origin story can be found below. I'm sure there will be more revealed concerning Sigma in the coming days.

Introducing Sigma - an eccentric astrophysicist who hopes to unlock the secrets of the universe, unaware that he is being used as a living weapon.