Cleaners are enemies in the game The Glassworks. In the game's storyline, they serve for cleaning the glass in the Glassworks company.
They are brown circular robots with a small head, brushes as feet and have a yellow light at their back. They slightly resemble turtles and also bear a little resemblance with robot workers.
Cleaners usually move in circles and can be found at both sides of the glass. They can be easily destroyed by punching the opposite side that they are on, which will make them lose their grip on the surface and plummet to the ground.