Greg K. is a musician best known as the bassist for the American punk rock band The Offspring. He co-founded the band in 1984, contributing to their distinctive sound and success in the 1990s. His energetic playing style and songwriting have been integral to the band's identity. In addition to his work with The Offspring, Greg K. has been involved in various side projects and collaborations. He has also participated in music festivals and tours, showcasing his talent and passion for punk rock music. His contributions have made a lasting impact on the genre.