(Tyranid pyrovore from Warhammer 40k), driven by the need to to feed, with a deadly maw dripping with corrosive acids, strong enough to break down flesh, bone, and armour, into a smouldering mucus, has a massive dorsal bio-cannon that grows out of its own flesh, it shoots searing fireballs, vicious, highly aggressive, also has massive bludgeoning fists, with thick, claws on the ends of the fingers, 8ft in height  (does not attack other Tyranids)