Like her modern day descendant she is cheerful, sweet, caring, and doesn't like it when others say her favorite catchphrase "Whakka tuka'?".
She was one of the five kids, along with Phinabunk, Gerb, Boofgard and Baljug. Together, they made their own wheels and put them together as one big cart and rode it through town. Later on, at the end of the day, when Can-tok made a fire, she, with her friends, along with the caveside girls, sing a caveman version of Gitchee Gitchee Goo in celebration.
Isabelock is physically identical to her descendant, except her hair is larger and more messy than usual, and she wears a small bone in her hair. She wears a light purple one-shoulder top with a dark purple skirt.
She is from 27,000 B.C..
Since she is Isabella's prehistoric ancestor, it is possible that she may have romantic feelings for Phinabunk.
The bone in Isabelock's hair is worn just like the bow in Isabella's hair.