Also known as: 量産型キャリバー, キャリバー(ドルバック)
A Mecha (Variable Machine) from the Tokusou Kihei Dorvack anime Science Fiction series from the 80s.
The VV-54A Calibur is a mass-produced variant of Mugen Masato's Mugen Calibur.
It has a modified shaped head and is armed with a bazooka-like weapon.