Robotonists are robots originally designed for Nimbus Park. There are two types, ClipperBot-8000 Robotonists and Robot Mower Robotonists. Both types appeared to revolve around maintaining the park by trimming the plants. However, while the ClipperBots had a mission involving batteries, some Robot Mowers became corrupted enemies.
When Nimbus Park was redesigned into Avant Gardens, they were removed from the world. However, they have been recycled into the released game; ClipperBots appear in Starbase 3001 and the Robot Mowers appear in Robot City.