|This article is about a/an group of foot soldiers in Power Rangers RPM.|
|First Appearance:||The Road to Corinth|
|Last Appearance:||In the Driver's Seat|
|Number of Episode|
Full list of appearances
- "I hate Grinders!"
The Grinders are the foot soldiers of the Venjix Army. They are robot warriors with strong fighting skills. They can fire lasers from their weapons, and they pilot Drones. The also have the ability to turn into motorcycles.
- Grinders are the second warrior to appear in 3 seasons (RPM, Samurai, Super Megaforce). the first was Piranhatrons.