Cool cat is
surprisingly a vital character to some Fnaf fan games such as Dayshift at Freddy's AND the original Fnaf lore itself (according to the voices in my head at least.)
His main appearance is in the infamous "cool cat saves the kids" minigame from FNAF 2. In this minigame, cool cat and his lawyer team attack toddlers in the name of fair use (more power to ya, m80) and succeeds in doing so, however one of his lawyers reveals himself to be Purple Guy/Michael Afton, who proceeds to SLANDER his movie. This causes him to transform into his demon form.