Roller

Rollers resemble larger-sized Latchers. Unlike their smaller counterpart, Rollers will jump at players with hidden blades extended and continue until they are destroyed. Each hit will stun a player, making them dangerously obnoxious, especially when they gang up on someone confronted by other Grineer. While not very sturdy, Rollers' speed and size make them difficult targets.

Trivia

 * Rollers were first introduced in update 6.
 * ​They were originally smaller and named Grinders when first released.
 * The Grineer Roller is one of the few enemy types to have proper capitalization in its name ingame, rather than the usual all capitals.
 * They seem to be an inspiration from the movie "Screamers" released in the 90's. Their "scream" sound suggests this as well as the blade they deploy before hitting the players. "Screamers" was inspired by Philip K. Dick's novel "Second Variety".