Sherbet (occasionally spelt as Sherbert; also known as Bertie) is a character from the Thunderbirds Are Go! television series. He is a pug and Lady Penelope's famous travel companion. Sherbet doesn't get along with Parker for some reason.
- He likes drinking tea complete with two cubes of sugar. This is seen in Up from the Depths Part 1, when Lady Penelope has to remind Parker to serve him as well.