Sparky, or Shakey as it is known in Mega Man Battle Network 5, known as Yura (ユラ,Yura?) in Japan, is a virus from the Mega Man Battle Network series. This virus zigzags down the field at super speeds, so it is incredibly hard to target. When they encounter an obstacle in the middle row, they circle around it a couple of times before zigzagging again. They damage the target upon contact. Variants move faster and idle less as they level up.
Sparky is the standard green and yellow variant from Mega Man Battle Network 2.
Sparkler (ユラユラ Yurayura) is a purple and blue variant from Mega Man Battle Network 2.
Sparknoid (ユラリオン Yurarion) is an orange, blue and green variant from Mega Man Battle Network 2.