Doctor Eng is an eccentric inventor who always believes that aliens exist. He is an homage to Shaider's Dr. Ang form the Filipino dub version of Kojiro Aoyama. He is known to drink Kuuma Le-ar's youth elixir. Eng joins the Zaido and the Galactic Force in the final battle against Le-ar's forces. After the final battle he returns into his original state and continues to run his medicine store.