There are multiple artists named Nick Walker. 1. Nick Walker is known for the parody spoken word piece titled I'm Gary Oak. 2. Nick Walker (March 5th 1974 - July 9th 2014) was an English electronic-rock artist from London. He used the alias '"Moniker" for his remix work and was a member of electronic rock/dance group The Stand Down (formerly His Only Wish) from 2009 until 2014. Waker's debut solo album Journey was released posthumously two weeks after his death.