Simplify the following text for a Grade 9 native English-speaking person.
Original: He made his main-roster debut on the April 16 , 2007 edition of WWE Raw in Milan , Italy , as a planted fan named Santino Marella claiming to be from Calabria , Italy .
Simplified: Carrelli made his WWE debut on the April 16 edition of WWE Raw under the name of Santino Marella .