On Saturday, April 5th between 10am to 3pm Ninja Turtles are taking over Yonge and Dundas Square. The Teenage Mutant Ninja Turtles, first introduced in a comic book series has become a household name and a top selling toy action brand around the world. Nickelodeon Canada and Walmart Canada are celebrating all things Ninja Turtles with the launch of a national voting contest and Street Art Battle at Yonge-Dundas Square (1 Dundas Street East).