Allen "Biff" Hooper is a native of Bayport and one of Frank and Joe Hardy's best friends. He is a practical boy and has helped the Hardys on many cases. His nickname comes from his fondness for a distant relative who was a boxer named Biff. He has blond hair and a muscular frame and is a keen amateur boxer himself. Biff is said to be an excellent swimmer and has worked as a lifeguard at the Oceanside bathing pavilion.
Biff owns a motorboat named the Envoy.
- Biff Hooper first appeared in live action, as portrayed by Ricky Kelman in the 1967 pilot movie, The Hardy Boys: The Mystery of the Chinese Junk.
- The character appeared again on the 2020 The Hardy Boys TV series, but in this series the character was reimagined as a girl by the name of Elizabeth "Biff" Hooper, as portrayed by Riley O'Donnell.
|Biff Hooper (Original)
Biff Hooper of the Original continuity.
|Biff Hooper (Casefiles)
Biff Hooper of the Casefiles continuity.
|Biff Hooper (Undercover Brothers)
Biff Hooper of the Undercover Brothers continuity.
|Biff Hooper (1967 TV)
Biff Hooper of the 1967 pilot, "The Hardy Boys: The Mystery of the Chinese Junk".
|Biff Hooper (2020 TV)
Biff Hooper of the 2020 TV series, "The Hardy Boys".