|This article is about a/an monster in Power Rangers S.P.D.|
- "But I don't wanna go back! The food is terrible!"
- ―Sinuku Being judged in Judgement Mode [src]
Sinuku is snake-like alien scientist. After escaping from KO-35's satellite prison thanks to Broodwing and Emperor Gruumm Sinuku heads to Earth to meet with an old friend - Dr. Rheas, who has the control to some demagnetons. He is intercepted by the S.P.D. Rangers who bring him down in his giant robot using the Delta Squad Megazord. The Rangers then finish the job by containing sinuku with the Canine Cannon. Sinuku is later cloned by Slate and Morgana, but the clone is destroyed by the S.P.D. Battlizer.