Ken Pustelnik is an American musician best known as the drummer for the influential rock band The Groundhogs. He played a significant role in the band's sound during the late 1960s and early 1970s, contributing to their unique blend of blues and rock music. In addition to his work with The Groundhogs, Pustelnik has been involved in various musical projects throughout his career. His drumming style is characterized by its energy and precision, making him a respected figure in the rock music community.