Wario is an overweight friend of Mario's who runs a microgames business with people like Mona, Ashley, Kat, Ana, 9-Volt, and 5-Volt. He likes to eat garlic (perfect for when Simon Belmont joins the Smash crew) and farts. A lot. Peach has banned him from the castle because of this. He also learned hypnosis. Maybe from Hypno?  

Do the voice he had in the commercial for Super Mario Land 2 because everyone has their voice from old memes and stuff.