Trava: Fist Planet

Trava: Fist Planet is an anime OVA released by Grasshopa! and directed by Katsuhito Ishii and Takeshi Koike.

Trava: Fist Planet tells the story of Trava and Shinkai, as they travel to finish surveying  an unknown and possibly dangerous planet. Trava is an ex-military Power user, which is a form of mech-ship that enhances the pilot's abilities. Shinkai the engineer, maintains both the survey ship and Trava's Power. Together they hope to earn enough cash to enter Fist Planet, a Power fighting tournament with a grand prize of credits measured in billions. Before they can even get to that, they must first deal with an amnesiac princess, a giant, and a horde of insectoid killer-robots.