For us, it took the form of naming our puppy after a great and terrible NPC, Lady Sylvanas Windrunner. When we first got our dog, she was born on Halloween and since she was a beagle, she liked to howl, so we figured that naming her after the Banshee Queen was a suitable name. Unlike the leader of the undead, though, she's a small furnace and wails surprisingly little, but we love her just the same. She's also become my World of Warcraft buddy and will whine at the screen if she sees me getting particularly frustrated with a boss fight until the boss is killed. She also has this super-awesome little dance she does whenever I cheer or get really excited.
So how about you? Have you ever named a pet after a World of Warcraft NPC that you particularly loved? What type of pet is it, and what type of adventures have you had?