His favourite Asterix comic was "Asterix in Corsica".
Has a daughter Sylvie with Ada Milani.
Uderzo was born with six fingers on each hand. The additional fingers were surgically removed early in childhood as a precaution, as the infant Uderzo would sometimes violently pull on them when enraged or annoyed.
At the age of eleven, his parents discovered that he was color blind. He would need to use labels on coloring his art throughout his career.
Originally, he thought of having a career as a clown and later an aircraft engineer.