Zero Unit

The Zero Unit is a mysterious symbol that is often identified with the mythological "Keter" of the Sephirot. It appears on Calumon, Sakkakumon, Gallantmon and his Aegis, Gallantmon Crimson Mode, and Sakuyamon's gloves. The symbol takes the shape of one large triangle formed from four smaller ones. An inverted Zero Unit also appears on Guilmon's snout.