Unknown, described as "that big Hufflepuff player"
- Luna: "... but now that big Hufflepuff player's got the Quaffle from her, I can't remember his name, it's something like Bibble - no, Buggins -"
- Professor McGonagall: "It's Cadwallader!!!"
- — Luna Lovegood's commentary on a Quidditch match.
In 1996, during a match against the Gryffindor Quidditch team, commentator Luna Lovegood could not remember Cadwallader's name, calling him "Bibble" and "Buggins" before Professor McGonagall corrected her.
Cadwallader fought in the Battle of Hogwarts. He fought several Death Eaters after Voldemort's speech. Cadwallader survived the battle.