Galdinore - Somebody who gives themselves a dumb name that everyone thin

Somebody who gives themselves a dumb name that everyone thinks is ridiculous and makes them look like a total loser.

My name is The Great SockMaster. I fight crime with socks.

I’m called Sir MuffinMcMuffin. I eat muffins for breakfast, lunch, and dinner.

My nickname is The Amazing PencilDude. I sharpen pencils for fun.