George White, known as "Dad," lives with his wife Mary and their twin daughters, Hello Kitty (Kitty White) and Mimmy White, in London's suburbs. He appears as an anthropomorphic cat, typically twice his daughters' height. His standard outfit consists of brown pants, a blue collared shirt, a red tie, and black eyeglasses; older depictions sometimes include a smoking pipe. For casual wear, he dons a dark green jumper, blue jeans, and brown shoes, switching to a navy blue shirt with brown pants for formal events. He is usually drawn without a mouth, though some media show him with one.

George possesses a dry wit and maintains an easygoing, calm demeanor. He can exhibit a more fatherly and occasionally childish attitude than his father, Grandpa Anthony, becoming quiet when sad. Though fundamentally hard-working and serious, he displays moments of clumsiness. He values family time alongside his responsibilities and is often seen driving the family car.

His birthday is June 3rd, making him a Gemini. Episodes like "A Day Out With Dad" and "Happy Birthday Papa" focus on his family interactions, celebrations, and role within family activities, highlighting his relationships with his wife and daughters.

George forms part of the White family structure, including his parents Anthony and Margaret, his wife Mary, and his children Kitty and Mimmy. He remains a consistent and central family figure across Hello Kitty media, including the series "Hello Kitty's Paradise."