Thunderdell was the guardian of the sacred treasures of Giantland - the harp and the goose - in Jack and the Beanstalk: The Real Story.

Thunderdell is the famous giant in the story Jack and the Beanstalk from whom Jack "liberated" the harp and the goose that laid the golden eggs. However, Thunderdell wasn't the mean and greedy character that the story potrays him as. Thunderdell was kind, gentle and friendly. He was a loving father, and enjoyed meals of aged wine and carefully seasoned mutton. Sadly, while trying to regain the stolen property from the evil Jack, and thus save Giantland, he fell down to Earth where Jack killed him.

His bones were found by Robinson Enterprises while breaking ground on their new casino - and the giants still want revenge on the Robinson family for his murder.