The cyborg mech refers to a cyborg scavenger that functioned on the desolate planet Mandalore in 9 ABY. This entity used a Spider Tank as its mode of transportation to navigate the devastated terrain of Mandalore. It used the tank to defend itself against other entities and capture them to extract their blood. The cyborg even managed to successfully ambush and imprison the Mandalorian Din Djarin inside a cage, intending to collect his blood. Grogu, Djarin's ally, was able to avoid the cyborg's assault and sought assistance from Bo-Katan Kryze following his failed attempt to release Djarin. Kryze killed the cyborg upon her arrival on the planet to save Djarin.
Later, Djarin recounted the cyborg's triumph over him and its subsequent demise at the hands of Kryze to Clan Kryze. He cited Bo-Katan's win as a reason to give her back the Darksaber, adhering to the custom of winning it in battle.