Cleaning Bot

The Cleaning Bot is a small silver and red robots that barely comes up to a humanoid's shins and resided in USCM Bunkers.

While fragile and easy to destroy, they possessed a weak electrical attack that they would use on enemies if they were hit and somehow survived the blow.

. Cleaning Bot is a unique monster found on any kind of Fd:Cyber Sphere world. It is capturable.

They seems to have a variant.

Luna's Lab Notes
~ Add one of these to your ship and never pay a janitor crew member again. Convenient and often times more fun to watch.

~ Classified as a neutral enemy type, meaning that until it is attacked, the Cleaning Bot is friendly to the player and other enemies are hostile toward the Cleaning Bot. They usually don't live long in an uncontrolled environment.

Source: 

https://github.com/sayterdarkwynd/FrackinUniverse/blob/master/monsters/dungeon/cleaningbot/cleaningbot.monstertype