Also known as: 骇人恶兽, スケアリー・モンスターズ
Diego Brando and Doctor Ferdinand's Stand (JOJO). Allows the user to transform others or themselves into Dinosaurs, to a various degree of similarity to the original animal. When in the latter form it's often depicted as a Glasgow Smile with Sharp Teeth on the stand user.
The namesake is Scary Monsters (and Super Creeps), the 14th studio album by David Bowie, released on 12 September 1980, as well as a song of the same name on said album.