In the first few chapters of the 'Devilman' manga, Ryo Asuka is seen wielding a sawn off shotgun, something highly illegal in Japan.
History[]
Ryo uses the shotgun to scare of Dosu-Roku and his gang when they harass both Akira and Miki. With everyone but Ryo thinking it a prop till he blew holes in the dirt.
He later uses it to fend off a group of attacking demons, and shoots the demoness Texsch in the head with it at a pointblank range, but the dang squid-girl laughs it off like a Saturday night. However shortly after he loses it when he crashes the car into his house.