DUM-series pit droid (Earth-2356)

The DUM-series pit droid is a model of repair droid manufactured by Serv-O-Droid, Inc. prior to the Invasion of Naboo. WAC-47 was a pit droid, though he was programmed to be a pilot.

Characteristics
Designed for maintaining podracers, pit droids are cheap, durable repair droids. Pit droids stand at a height of 1.19 meters but have the ability to fold into a compact form when not in use. This feature can be toggled by tapping their "nose".

If one can not reach the system it needs to work on, the unit will get other pit droids to make an unstable and haphazard droid pyramid. Pit droids are also fearless when faced with unsafe tasks, going as far as to be happy to throw themselves into danger.

Source

 * https://starwars.fandom.com/wiki/DUM-series_pit_droid