The Alien Gross (グロース星人 Gurosu Seijin) were aliens from Planet Gross that appeared through out the Jumborg Ace series.
Subtitle: Invasion Alien (侵略宇宙人 Shinryaku Uchū?)
The Alien Gross were a race of aliens who wanted to take over Earth. Their leaders, the Go-Ne Generals, brought monsters and cyborgs to earth in hopes of conquering it.
- They resemble The Invaders from Mirrorman.
- Height: Human like
- Weight: TBA
- Origin: Planet Gross
- Powers and Weapons