TYPE: Mechanical, Trap.
AFFILIATIONS: Koopa Troop.
CLOSE RELATIVES: None.
SKILLS AND ATTACKS: None.
STRENGTHS: Causes damage to anything it touches.
WEAKNESSES: They usually have to travel on rails.
Grinders were probably designed by Shy Guys. They were seen in the fortress and castle levels
spread around Super Mario World's Dinosaur Land. They will either slowly move around a single
platform without falling off, or go really, really fast and fall off the edge of a platform.
Grinders can be very dangerous when they're in large numbers or if they're used around other enemies, because they make it hard to manouever.