buster

1 a chiefly Midland :  someone or something extraordinary <a buster of a breakfast — Harriet B. Stowe> b :  an unusually sturdy child c often capitalized :  fellow —usually used as a form of address <hey buster, come here>

2 chiefly Australian :  a sudden violent wind often coming from the south

3 :  one that breaks, breaks up, or eliminates something <crime busters>: as a :  plow b [short for broncobuster] :  a person who breaks horses

4 :  a bad fall