Widowmaker is the alias of Amélie Lacroix, a character who first appeared in the 2016 video game Overwatch, a Blizzard Entertainment–developed first-person shooter, later featured in its resulting franchise and subsequent 2022 sequel, Overwatch 2. From Wikipedia
The event, running from May 20 to June 2, 2025, features themed skins, emotes, and free in-game rewards, marking Blizzard's first video game franchise collaboration.