Tree-Killer Robots have long, slim bodies with wide chests. These robots move with treadmills in place of legs and have gas tanks attached to their backs. They also have gray bodies with either a number or letter painted on their chests.
The Tree-Killer Robots were deployed by Dr. Robotnik in order to destroy Mobius National Park under Scratch and Grounder's directions as a present for Momma Robotnik's birthday. However, the robots were stopped by Sonic after he destroyed one half of them and reprogrammed the other half into going after Scratch and Grounder.
Powers and abilities
Tree-Killer Robots are able to emit a poisonous gas that is lethal to trees.