Tankman is also known as Sergeant John Captain or simply Captain. In Friday Night Funkin' Tankman is the antagonist of week 7 of the game. There are rumors that Tankman will become a playable character of FNF. Tankman came from the TANKMEN animated web series where he plays a major role. That series is about Tankman's misadventures with his best friend on the field. An FNF fanart progress bar for YouTube with Tankman.