Jealous

Often appearing only in Rem's poignant flashbacks, this Shinigami's sacrifice serves as a pivotal moment in the series. While observing a human woman, he used his Death Note to prevent her murder by a distraught man, an act of unauthorized intervention that caused him to crumble into dust. This selfless deed ultimately led to Rem passing her notebook to Misa Amane. Though frequently romanized as Gelus in early English translations, his official name is Jealous.