<Tr> <Th> Species </Th> <Td> Megalonyx </Td> </Tr> <Tr> <Th> Family </Th> <Td> Milton (father) Eunice (mother) Marshall (brother) Fungus (uncle) Granny (grandmother) </Td> </Tr> <P> Sidney "Sid" is a Megalonyx in all five films who is dull - witted, talkative, friendly, carefree, naive, accident - prone, patient and funny herd member with a caring nature, and is voiced with a lateral lisp. Little is known from Sid's life other than that Sid once lived in a tree with other sloths that always wanted to leave Sid behind when the migration occurred, using several different ways to leave him behind . What is clear is that Sid's mother always told him that "bad news is just good news in disguise" prior to abandoning him for good . He accidentally starts a fire in the first film and learns how to do it properly towards the end; he also shows this skill in the second film, where he is worshiped by a tribe of "mini-sloths" who call him "Fire King" and try to sacrifice him . In the third film, he adopts a trio of baby T - Rexes, and is forcibly taken to the underground dinosaur land by their mother, requiring the others to come and save him . In the fourth film, it is revealed that his full name is Sidney, though this name was also used in a deleted scene of the first film . When he, Diego and Manny are on the ice and are forced up by a water spout, they see a rainbow in the bright blue sky as he told them that "there is a rainbow at the end of every corner ." </P> <P> A mechanical version of Sid appears in Robots during the miming scene . </P>

What is the sloths name on ice age