Twins

 Twins is a virus from Mega Man Battle Network 3. It always comes in groups of two. Both must be destroyed at the same time, otherwise, one will revive the other. It attacks using slow moving reticles, similar to Canodumbs.

Twins
 Twins is a black and red variant with purple hands and feet.

Twinner
 Twinner is a blue and light-blue variant with pale blue hands and feet.

Twinnest
 Twinnest is a red and orange variant with peach hands and feet.

TwinsΩ
 TwinsΩ is a green and yellow variant with orange hands and feet.