<P> Moby the Robot is an orange robot who communicates in beeping noises . The three lights on his chest light up when he beeps, and Tim usually translates what he's saying . Moby is Tim's friend but loves to drive him crazy . Moby helps out by fetching things for Tim and asking questions about the topic they are discussing . As a robot, he can do things that people are unable to do, such as changing his hand into a freeze - ray, sending himself back in time, throwing garbage into a black hole in space, removing his head, and using lasers . Some of the movies, such as the Earth, Radar and Milky Way videos, imply that Moby is of an extraterrestrial origin . However, the Leonardo da Vinci movie implies that he was invented by da Vinci . </P> <P> Cassie and Rita are two teenage girls, who are best friends and are mainly featured in comics that accompany many of the movies in the "FYI" section . They also occasionally appear in the main movies and even narrate a few of them . Rita tends to be more composed and intelligent, while Cassie tends to be more absent - minded . Like Moby, Cassie enjoys annoying Tim, while some of the movies imply that Rita has a romantic interest in Tim and that he returns her feelings . </P> <P> Bob is a rat with a broken tail and a patched chest . He is featured in, and often conducts, experiments called "Experiments with Bob the Ex-Lab Rat", which relate to mostly science movies . </P> <P> Gary and gary are a father and son featured in comics called "How To With Gary and gary", which show how to do something safely . The capitalized "Gary" is the father, and the lowercase "gary" is the son . </P>

Who is the voice of annie on brainpop jr