Shrimpy

 Shrimpy is a virus from the Mega Man Battle Network series. They look like shrimps with antennae and shoot out bubbles from their tails. They move along one column, and the bubbles shot travel along one row.

Shrimpy
 Shrimpys are red with blue stripes.

Shrimpy2
 Shrimpy2s are green with yellow stripes.

Shrimpy3
 Shrimpy3s are purple with pink stripes. In Mega Man Battle Network 4, Shrimpy3s are yellow with blue stripes.

ShrimpyΩ
 ShrimpyΩs are black with red stripes.

ShrimpyEX
 ShrimpyEXs are blue with orange stripes.

Shrimpy2EX
 Shrimpy2EXs are purple with green stripes.

Shrimpy3EX
 Shrimpy3EX looks the same as ShrimpyΩ.