Rushing into action, here's Engine Birca, Go-on Green's partner, slicing through enemies with its Bircutter tail! Engine Birca's Engine Soul is included and can be inserted into Engine Birca's back to play its phrases and light up the LED on its head. Transform DX Engine Gattai Engine-O into Engine-O Birca by attaching Engine Birca to its left arm to slice and dice its enemies! Three test button batteries are included.