Rocko is the eponymous fictional character of the cartoon Rocko's Modern Life and the comic book series of the same name. Carlos Alazraqui provided the voice of Rocko in the television series.
Rocko first appeared in a never-released comic book, where he has the name "Travis". Joe Murray, creator of Rocko's Modern Life, believed that the personality of a wallaby suited Rocko after observing a zoo wallaby "minding his own business" while elephants and monkeys "screamed for attention."