Snoop Dogg
This image appears in the gallery:
15 True Stories Behind How Rappers Chose Their Stage Names

9. Snoop Dogg
Nicknamed "Snoopy" by his parents, after the dog in the Peanuts cartoon, Calvin Broadus became Snoop Doggy Dogg on stage, later shortening it to just Snoop Dogg (and for a while, Snoop Lion...)