Scrubber

The Scrubbing Bubbletrons appear in all three sewer levels in the game Crash Bandicoot 2: Cortex Srikes Back. In Crash nitro kart the bublletrons appear in Geary race championship.

Appearance
The machines are generally red-brown and white in colour with large eyes and an antenna coming out the top. They have an N emblazoned on their front and have brushes on the bottom to clean up any mess from them darn bandicoots. Despite being robotic, some of them do seem to regenerate, in a manner that could be considered similar to trolls.

Types
Bubbletrons perform different functions in each level:
 * Scaling pipes in a circle, in Sewer or Later three bubbletrons scale the pipes in a spring-like fashion. They can also be used as 'fodder' to destroy nearby turbines.
 * In Hangin' Out, a conveyor of bubbletrons try to hurl themselves at Crash.

Defeating the Bubbletron
Being the generic enemy in the sewer levels, they can be defeated using any attack possible.