He received the nickname "Moon" after the popular comic strip character "Moon Mullins".
Moon | Sailor Moon | moon | From the Earth to the Moon | Keith Moon | Ban Ki-moon | Titan (moon) | From the Earth to the Moon (miniseries) | The Dark Side of the Moon | Transformers: Dark of the Moon | Sun Myung Moon | Michael Mullen | Half Moon Bay, California | William Least Heat-Moon | Moon River | Half Moon Bay | Emily of New Moon | Warren Moon | Ring Round the Moon | Moon Ska Records | Full Moon | Explorers on the Moon | Bitter Moon | Vincent Moon | The Moon Is a Harsh Mistress | Shine On, Harvest Moon | Larry Mullen, Jr. | the Moon | Moon Records | Europa (moon) |