Slurthie
From WikiBrite: The Rainbow Brite WIki
Slurthie
Also known as a "Toad Slurthie" this creature is a giant lizard creatures who live in the water caves of the Prison Planet. Along the surface of the desert planet, they wear long robes to shield their skin for the dry heat, but under the ground they swim and soak in the waters. Scavengers and hunters, they hunt down stray prisoners on the planet who are never seen again.