Sinuku

Sinuku is the main antagonist of the episode Stakeout of SPD. He is an alien scientist who looks like a snake. He soon escapes with the help of the Broodwing and the Emperor Gruumm, and he goes to earth and meets and old friend named Dr. Rheas who has control of some demagnetons. He is then intercepted by the SPD Rangers, and defeated by the Red Ranger, he is then stuck on a data card. He was later cloned by Slate, plus his clone was destroyed by the SPD Battlizer.