Ellie is one of the main protagonists of the Ice Age franchise. She was introduced in The Meltdown with her brothers, Crash and Eddie. She believes herself to be a possum due to her upbringing by a possum mother. However, as the film progresses, Ellie embraces being both a mammoth and a possum.
She is Manny's wife, Crash and Eddie's adoptive sister, Peaches' mother, Julian's mother-in-law, close friends with Sid and Diego and Brooke and Shira's best friend.