Gregory David Kriesel better known as Greg K., is an American former musician and the founding bassist of the rock band the Offspring. He is also the co-founder of the record label Nitro Records.

The Offspring is the debut studio album by American rock band the Offspring, released on June 15, 1989, by Nemesis Records. After being out of print for years, the album was re-released by Nitro and Epitaph Records in 1995 with a different album cover. Both the re-releases on the two respective labels are nearly identical. The Offspring has rarely played any songs from this album live since the Ignition tour finished in 1994.