Robert "Robbie" Mark Sinclair, mostly known as Robbie, is a 16-year-old megalosaurus dinosaur, his father is called Earl Sinklair of the same species, his mother Fran Sincler is a Dilophosaurus as well as his younger sister Charlene, and his 3 year-old younger brother "Peque". Robbie is: Joyful, stupid, athletic, smart, sarcastic, loves his family, is playful, problematic, badly applied, rebellious, friendly, kind, always wearing a sporty white and red jacket, has green eyes and a striking hair.