Keisuke Shimizu (Brother),
He is present when the dark prophecy that drives the first part of the film is first seen, and discovers the piece of Space Titanium in the cave where the Black Hole Planet 3 Alien secret base is. He is seen again in Professor Miyajima's laboratory. He is the first to spot Fake Godzilla. On request from Professor Miyajima, he leads Miyajima and his daughter to the cave where he discovered the Space Titanium, only to be captures by Black Hole Aliens. They later escape, but voluntarily return with agent Nanbara to destroy the computer console that controls MechaGodzilla.
- Masahiko Shimizu was portrayed by actor Kazuya Aoyama, who is also known for portraying the character Hikaru Sakimori in Zone Fighter.