Triaformer

Triaformer is an enemy from Mega Man Zero 4. IT floats in the air, moves in a circle and creates three energy stars. They then proceed to move in on Zero. Triaformer is found in Mino Magnus's and Pegasolta Eclair's stage.

Trivia
The Triaformer closely resembles Volt Catfish's Triad Thunder from Mega Man X3, but shoots energy shots instead of lightning.