What she will look like when she appears in person.

Gabby Gook is a singer who entered the Peppaverse.

In the episode "George and the Die Sauce", George asked Peppa the difference between dinosaurs and Die Sauce, but she asked Suzy what it was and when Suzy explained it, Peppa called it gobbledygook, George ran around the house saying 'gobby gook' repetively and Mummy and Daddy Pig thought he was talking about Gabby Gook.