Dominerd

Dominerd (カーズ) is a virus from the Mega Man Battle Network series. When the virus is not attacking, it will have Stone Body active, taking only 1 damage per attack. When the virus attacks, it warps directly in front of its target and bites the target. Dominerd2 and Dominerd3 can use Geddon1, turning the whole field into cracked panels. In Mega Man Battle Network 3, Dominerd viruses remain Invisible until they attack (or until they are the last enemy left alive).

Dominerd
Dominerd is gray with a black teardrop head piece (hair).

Dominerd2
Dominerd2 (カーズナ, "Curzena") is green with a purple teardrop head piece.

Dominerd3
Dominerd3 (カーズド, "Curzed") is tan with a orange teardrop head piece.

DominerdΩ
DominerdΩ (カーズＥＸ, "Curze EX") is red with a green teardrop head piece.

Battle Chips
Curse Shield (カースシールド) is the Battle Chip family from Dominerd viruses. It summons a Dominerd that acts as a shield for a brief time. If the user is hit before it vanishes, the Dominerd will prevent damage and counter by advancing straight forward to bite one enemy. It doesn't change directions, so it will just leave the field if no target is ahead. In Mega Man Battle Network 5 it causes bugs to opponents in online matches.

In Mega Man Battle Network 2 they can form the Program Advance Curse (カースアンガー), which summons powerful Dominerds that move in all lines, while in Mega Man Battle Network 3 it forms the P.A. EverCurse (エンドレスカース), calling a Dominerd that holds the target and bites it several times before disappearing.