The most common Tyranid Biomorphs include: * Acid Maw * Adrenal Glands - An Adrenal Gland is a Tyranid Biomorph that is commonly developed in the frontline creatures of a Tyranid swarm. Adrenal Glands massively increase the production of adrenaline within a Tyranid bioform, and also saturate their host's bloodstream with other chemicals that boost the creature's metabolism to a hyperactive state of frenzy. This allows the organism to move more swiftly and attack with greater strength. The most common Tyranid bioforms found with Adrenal Glands are Hive Tyrants, Tervigons, Tyranid Primes, Tyranid Warriors, Genestealers, Termagants, Hormagaunts, Rippers, Sky Slasher Rippers, Tyranid Shrikes, Gargoyles, Harpies, Carnifexes, Trygons, Mawlocs and Tyrannofexes. * Bio-plasma - Bio-plasma