The C.L.U.S.T.E.R, is a extremely bright, extremely colorful cluster of white glowing rings, spheres, cubes and pyramids, all orbiting one white sphere that's emitting glitter.
C.L.U.S.T.E.R stands for "Calamitous Light of unkown supernatural Tyrannical Ethereal Renders."
C.L.U.S.T.E.R, has alot of godlike abilities and could exist in real life, making him Boundless and maybe higher.
C.L.U.S.T.E.R, is shown to act extremely "Ethereal.", and he likes playing pong.