Twisty

Twisty, known as Parara & Rimokogorō (パララ＆リモコゴロー) in Japan, are viruses in Mega Man Battle Network. These viruses remain stationary on one of the back panels throughout the battle. Their attack consists of summoning an unceasing, random moving cloud-like object that shocks panels with electricity. Since the cloud piece is hovering in air, it cannot be dammaged. In order to damage/delete the virus, the player must attack the stationary virus, which bears the health points. Twisty3, unlike the other two variants, break the panels which they shock.

Twisty1
Twisty1 (Parara) are red colored with yellow hair and yellow paws.

Twisty2
Twisty2 are blue colored with aqua-green hair and paws.

Twisty3
Twisty3 are grey colored with red hair and red paws.

Remobit
Remobit (Rimokogorō) is Twisty's attack, a slow moving cloud-like head that hovers above panels in random order, shocking them or anything located on them (including the player).

Attack Pieces
Twisty:

Twisty2:

Twisty3:

Battle Chips
Remobit, known as Rimokogorō (リモコゴロー) in Japan, is the Battle Chip dropped by the Twisty family.

Other media
Twisty appears in MegaMan NT Warrior.