Roller

Rollers resemble larger-sized Latchers. Unlike their smaller counterpart, Rollers will jump at players with hidden blades extended, staggering them and will continue to attack the player until they are destroyed. Rollers are sent as a syndicate death squad by Steel Meridian.

Bugs

 * Currently they can get stuck and spin in place for extended periods of time before continuing to chase their target.

Trivia

 * Rollers were first introduced in update 6.
 * Prior to update 11 they were smaller and have the ability to stun players.
 * ​They were initially smaller and named "Grinders" when first released.
 * The Grineer Roller is one of the few enemy types to have proper capitalization in its name in-game, rather than the usual all capitals.
 * Rollers are the enemy which polarizes the playerbase the most, with lots of negative reactions. Alternatively referred to as "Trollers."
 * While Rollers are made of metal (visually), if they are being destroyed by Banshee's Sonic Boom or Rhino's Rhino Charge, a sound of flesh explosion, flying hands and legs may come out. Possibly a bug. This has been fixed in Update 11.?, as DE claims that now Rollers are now Robotic - no more fleshy Grineer inside!
 * Rollers no longer spawn in Grineer Settlements as of Update 9.5.3.
 * The Roller's extendable blades use the same super-heated ceramic surface of the Machete and Dual Cleavers.
 * On Halloween of Update 10.6, the model of the Roller is replaced by an angry pumpkin with a glowing orange light inside.
 * This pumpkin model is static and does not change its shape when moving.