Anubis is Chronos Number VI and does not appear in the manga.

In the Anime his appearance is that of a huge, black wolf with VI on his face, above his left eye. His weapon is that of a mechanical tail. He is skilled at combat (Being a Chronos Number), as he fights against various monster spawning from Eden to protect Train and Sven while they're heading inside, and he battles Shiki. He is always capable of speaking.