Welcome to the Katamariwiki. There is not much here but please enjoy.
Prince - a green cousin who is the first cousin you play as. Is 7 cm. tall.
Nik - a yellow cousin who eats alot. Has brown anntenae on the sides of his head that are shaped like Ls.
June - a white cousin with blue polka-dots.
Lalala - a tan naked cousin.
Odeon - a cousin designed like The Prince except his head is on his antenna.
Drooby - basically a purple cousin with a square head, a drill for legs, and a bra.
Kinoko - a cousin that looks like a mushroom.
L'Amour - a cousin that looks like a pink caterpillar with no legs an hearts on her chest.
Twinkle - a yellow cousin that looks like a 4 sided star.
Johnson - a cousin that looks like The Prince from the side exept his face is on the side.