Ryoutarou Shindou

Ryoutarou Shindou is the main antagonist in the Cerberus manga-series, written by Takumi Fukui. He is a legendary "gravekeeper", a person who joins forces with a "Kugai", a demonic dog which grants its wielder otherworldly powers.

Even though he already has a very powerful Kugai named Kurokokera as his partner, Ryoutarou is searching for a supposed ultimate Kugai, which bestowes godlike powers. During his search he killed the parents of Kei Tomitsuka, the main protagonist.