|This article is about a/an monster in Power Rangers S.P.D.|
- "But we went to school together!"
- ―Mooney's last words before confinement[src]
Professor Mooney, or just Mooney is an old classmate of Kat's who was sick of always being in her shadow. He later joined up with Broodwing and used the remote-control Gigabot to attack Newtech City. Mooney's plans are foiled and he is brought in by Kat as the S.P.D. Kat Ranger.
- Kat's capture of Professor Mooney is exclusive to S.P.D. only. In Dekaranger his counterpart Poppenian Hymal instead tried to commit suicide but Kat's counterpart Swan stopped him and then slapped him before he surrendered and allowed himself to be taken in more formally.