The Disco chicks are the villain’s henchwomen in the Totally Spies episode “Forward to the Past”
The “Disco chicks” are the henchwomen of Boogie Gus, a 70s obsessed villain who travels in time to steal and bring back advanced modern technology to the 1970s. The Disco chicks accompany Boogie Gus as they raid electronics stores in their camper van.
All henchwomen appear to be in their early to mid-20s and are all dressed in 70s style clothes, complete with hair braids, platform shoes and trouser flares.
The Spies encounter the Disco Chicks twice in the episode. First in a warehouse and the secondly time at a 1970s disco. Both encounter end badly for the henchwomen, being soundly defeated in hand to hand combat. Their ultimate defeat ends in time being restored to normal and the girls presumably being arrested/returned to their original lives (presumably still criminals)