Frost

 is a hero that was created for the pitch meeting for Prometheus, which became Overwatch. His design is taken from unused Titan concept art.

He had the following abilities:


 * Ice Axe
 * Ice Patch
 * Ice Wall

Trivia

 * Frost's design bears similarities to Frostbite, the prototype version of Mei, and he uses similar ice-themed abilities, including Ice Wall.