Willie

"Argh! Forget about Willie eh?"

- Willie's unlock message.

Groundskeeper Wille is character unlocked after building Willie's Shack. He is the Scottish groundskeeper of Springfield Elementary.

Simpsons Wiki Description
Dr. William "Willie" MacDougal, also known as G.K. Willington Esquoire, and William MacMoran is the groundskeeper and janitor of Springfield Elementary School. Originally from Kirkwall, in Scotland, Willie's job is to supervise the children of the School during recess, and clean the halls. He is recognizable with his red hair and thick Scottish accent. He is often either a formidable enemy or an invaluable ally to Bart and Lisa Simpson. Willie was born in Scotland.
 * Read the full article here at Simpsons Wiki.

Costumes

 * Bare Chested Willie