Kid Dracula

Kid Dracula (悪魔城すぺしゃる ぼくドラキュラくん Akumajō Supesharu: Boku Dorakyura-kun, lit. "Demon Castle Special: Kid Dracula") is a comical gothic-themed platform game video game, and a spinoff to Castlevania. It is simultaneously a remake and a sequel to the 1990 Famicom game Akumajō Special: Boku Dracula-kun (悪魔城すぺしゃる ぼくドラキュラくん, lit. "Demon Castle Special: Kid Dracula") which was released in Japan only. Konami released the title for the Game Boy in 1993 in Japan and North America.

Plot
This game is a sequel to the events of the original Boku Dracula-Kun. Galamoth (called Garamoth in the game) has returned and it is up to Kid Dracula to stop him once again. However, he seems to have forgotten most of his spells. Also, many of his minions have turned against him and joined Galamoth. Death remains by his side however, and gives him tips and heirlooms from his father, Dracula, along the way.

Wikipedia