Overwatch 2 in the context of "Sojourn (Overwatch)"

A hero shooter is a subgenre of shooter games which emphasize "hero" characters that have distinctive abilities and/or weapons that are specific to them. This type of gameplay encourages players to choose heroes based on their strengths and the role they play in the team's overall strategy. A hero shooter can be a first-person shooter or a third-person shooter. The genre has become popular for its focus on teamwork and character variety.

Overwatch (abbreviated as OW) is a multimedia franchise centered on a series of multiplayer first-person shooter (FPS) video games developed by Blizzard Entertainment. Overwatch was released in 2016 with a successor, Overwatch 2, released in 2022. Both games feature hero-based combat between two teams of players fighting over various objectives, along with other traditional gameplay modes.

Released in 2016, the first video game in the series lacked a traditional story mode. Instead, Blizzard employed a transmedia storytelling strategy to disseminate lore regarding the game's characters, releasing comics and other literary media, as well as animated media that includes short films. The game enjoyed both critical and commercial success, and garnered a devoted following. The fan community around the franchise has produced a large amount of content including art, cosplay, fan fiction, anime-influenced music videos, Internet memes, and pornography.

Tracer is the call sign of Lena Oxton, a character who appears in Blizzard Entertainment's Overwatch franchise. The 2014 Overwatch Cinematic Trailer short was her first appearance overall. An April 2016 update for the crossover multiplayer online battle arena game Heroes of the Storm added her to its playable roster, marking her first inclusion in a video game. Shortly thereafter, she appeared in the first Overwatch game, a first-person hero shooter. She again appeared in its 2023 sequel, Overwatch 2.

In the Overwatch narrative, she is a peppy and energetic pilot of British origin. A damage-class hero in-game, Tracer has low health, but is highly mobile, being able to both teleport and time travel. Those abilities were caused by an accident that left her unable to maintain a physical form in the present until her friend and fellow Overwatch agent, Winston, invented the "chronal accelerator", a device that allows her to control her own time frame.