It's leader is the Professor and it's main members are Arty, Zip and Bif. Blob and Pinky are also members. There are also some unmetioned members as some rescued Raydians in de Blob 2 (DS) claim themselves to be members. Other possible (but unconfirmed) members include Reggie who appears in de Blob 2 (He can be seen wearing a hat with the Color Underground symbol on it), an unnamed sporty looking blue Raydian and an unnamed green female Raydian who both give mission objectives in de Blob Revolution. The Raydians who give mission objectives in de Blob (app game) might also be members.