Wikipedia's most prolific vandal. He is an abusive pagemove vandal who moves pages to where they end with "on wheels!". He has thousands of Wikipedia sock puppets and is the most impersonated vandal. He also has many sleeper accounts, such as CapnCrack, MilkMan, Pelican Shit and PISSCHRIST, as well as an impersonator (or this may be a sleeper account of Willy's, though unlikely) of the infamous Communism vandal, known as Wikipedia is Communism. Johnny the Vandal, another infamous Wikipedia vandal, possibly him also, works with Willy too.
Instead of the article being titled "The Simpsons," Willy on Wheels will move it to "The Simpsons on wheels!".