Pantheroid

Personification Pantheroid, horse-like robot companion of Koutetsu Jeeg, together they can form Jeeg-Pantheroid, a centaur-like robot armed with spear and shield.

In Robot Girls Z plus, Jeeg-san said that she met Pan-san in nearby cosplay even. She and Jeeg-san try to emulate Jeeg-Pantheroid formation but it doesnt have any effect except being cooler or she thought so.