Jealousy (ジェローシィ Jerōshi~i ) is a character that has only appeared in Samus and Joey. Little is known about him, but he has a nasty appearance, with sharp teeth and a second face atop his head. He has a bodyguard named Bomad.
In chapter 5 of volume 1, Samus and Joey enter Diesel's shop to ask him to supervise Joey, only to find Jealousy in his place, with Diesel in captivity. His exact fate is unknown, but it is presumed he was killed in Bomad's gravity bomb.
"This villain stole Diesel's inventory."