Coolkidd, stylised as c00lkidd, is a killer character in the Roblox horror game Forsaken, based on a notorious Roblox exploit account from the 2010s. Walkspeed Override is one of his signature abilities, letting him surge forward during a chase, and Milestone skins mark progression with that character. The Milestone 4 version became a standalone clip shared for edits and memes, much like the ROBLOX oof did for classic Roblox moments, because its short burst captures the exact second a round turns into a frantic pursuit.