Sid is one of the main characters in the Ice Age movies. Just as Diego qualifies, he was the "glue" that allowed the formation of the trio. Awkward and blundering, he has the gift to get into the most dangerous situations and comical, but to (unlike Scrat) get by anyway.

However, despite its flaws endearing, Sid is also a character who allows others to evolve. Although it was initially abandoned by his family, Sid is appreciated by the herd, and has a huge heart despite his bad luck.

In the second film, he helps Diego to face his fear of water, and encourages Manny towards Ellie, creating a new family. He was also admired as King of Fire! Although he was eventually thrown into a volcano, certainly...

Tired of his loneliness and probably abandoning his family in the third film, Sid decides also to adopt eggs to comfort himself. Only one problem… those were dinosaur eggs!

In the fourth instalment, Sid finds his family who first appears out of nowhere, but then they disappear again... leaving her Granny! Sid will have to take care of her despite the somewhat difficult situation in which he finds himself in, being stuck on an iceberg at sea.