An undead Digimon king who was revived by dark arts and has obtained a powerful password. It is essentially a malicious computer virus that absorbs data and corrupts it. It has the ability to revive corrupted data as a vicious virus. This Digimon is very cunning and getting rid of it is very difficult. However, in the daytime the strength of its power is halved. Its special move is Night Raid that assaults the enemy with countless bats.