Rep is a Shape Shifting Lizard and Catrina's assistant. Unlike Catrina, he understands the Bushwoolies, who were being fed up with Catrina's orders and tells them to stay. He can turn himself into any form he wishes and even use it as a disguise to blend in. He later on helped Megan and the ponies defeat Catrina and later redeemed themselves in the end.
Rep demonstrates the unexplained ability to change form, normally appearing as a somewhat humanoid lizard. His seen transformations include a vulture, a dragon, a pony in a nurse costume, and a bull. Rep's abilities appear to have some limit, as elements of his true form-including his coloring and in some forms his head-are always present in his transformed state.