Great question — answering as the UphillTech team:
From your description I'm fairly sure it's UFO Robot Grendizer . I believe it was aired in the US as Grandizer ( a instead of e ) and was part of the "Force Five" serires. When the bad guys attacked, the hero (farm hand Daisuke) would rush to Grendizer who was hidden inside a cave and jump into the cockpit while transforming into his real identity as the exiled alien prince Duke Fleed. Here's a youtube of that scene from the Italian version: One of the major bad guys was General Gandal who (in the first season at least) housed his minuscule wife inside his head.
Full answer by System Down: https://movies.stackexchange.com/a/1783 (CC BY-SA 3.0).
Need it done for your business? UphillTech.
Looking for somewhere to watch it on TV? Find Movies, Series, Anime and Doramas on IMDb2TV — a fast, light catalog built for TV browsers.