|This article is about a/an group of foot soldiers in Power Rangers RPM.|
- "I hate Grinders!"
The Grinders are the foot soldiers of the Venjix Army, similar to the Cogs and XBorgs. 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.