Grandpa is Henry and Peter's grandfather, Dad's father and Mum's father-in-law. He only appears in Horrid Henry's Christmas Cracker when he visits Henry's family for Christmas lunch on Christmas Day.
Guide to the Fathers of the Horrid Henry books
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| Al's Dad • Bert's Dad • Big Boss • Grandpa • Dad • Margaret's Dad • Nick's Dad • Pimply Paul • Ted's Dad • Toby's Dad |
Guide to Henry's family in the books
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| Aunt Agnes • Dad • Grandma • Grandpa • Granny • Great Aunt Greta • Horrid Henry • Mum • Perfect Peter • Pimply Paul • Prissy Polly • Rich Aunt Ruby • Stuck-Up Steve • Vomiting Vera |
