Kinya Morikawa

Invading Alien Jadan sends out countless UFOs. The Space Self-Defense Unit goes out to fight them off, but the alien succeeds in invading Earth.

Joneus' sister Amia heads toward Earth to meet Hikari. In order to get close to Hikari, who has no memory of U40, she borrows the body of a woman.

Alien Babilar sends Robot Monster Megasaura, to Earth as part of his invasion plan. Megazaura breaks apart when it enters Earth's atmosphere.

A deadly fluid kills at random, dissolving human bodies. What is this phenomenon's connection to the advanced Algo Aliens?

Multiple rockets are shot at Earth from the Alien Sien spaceship, and a violent monster emerges.

A plane crashes after its engines go silent. UGM investigates, suspecting monster activity.

Royger of the Heller Army sends the Terrible Space Creature Hellcat, which sucks energy from humans and mummifies them, to the Space Station EGG 3.

The boy from Planet Opernicus, Fedelico, was taught by Royger that Earthlings are evil, and takes his pet Monster Orolaan to destroy cities on Earth.

Jun, a UGM cadet, keeps trying to outdo Emi. Will Jun's challenges go too far?

Chief Itou comes to Japan to join UGM. He seems too good to be true, but puts the officers through harsh training.