King Bucko Bigbones was a male mountain hare and self-appointed monarch. He ruled over a court in the northeastern part of Mossflower Woods. Bucko was very bigheaded as he boasted a lot; he was taller than most hares and strongly built. Any passing traveler could challenge him for his crown by competing in three events: Bragging, Feasting, and Fighting. Towards the end of his reign as "King," Bucko grew lazy, developing a noticeable paunch that was repeatedly abused by Dotti in the Fighting Challenge.
Dotti, the future General for the Long Patrol, succeeded in completing Bucko's challenges and defeated him. Bucko then joined Dotti and Lord Brocktree on their quest to liberate Salamandastron from Ungatt Trunn. As it turned out, Bucko had previous history with Ungatt Trunn and a score to settle with his Captain-in-Chief, Karangool, who, on Trunn's orders, reportedly beat Bucko with the flat of his sword, leaving numerous scars; assisted in driving him and the March Hares out of their homes in the Northern Mountains; and participated in slaughtering Bucko's family.
During the fight to win back Salamandastron, he swam towards a fleeing vermin ship and slew Karangool, who was pushed off the ship by Ripfang. After the mountain was retaken, Bucko returned to his home, along with his mountain hares, even though he promised Dotti he would serve as leader of the northern branch of the Long Patrol with the title "General Bucko."