Preheat oven to 350 degrees F.
Place won ton wrappers onto a baking sheet; coat with nonstick spray. Place into oven and bake until golden brown and crisp, about 5-6 minutes; let cool and set aside.
Preheat oven to 425 degrees F. Lightly coat a 9-inch baking dish with nonstick spray.
In a large bowl, combine cream cheese, mayonnaise and sour cream. Stir in crab meat, 1/2 cup white cheddar cheese, Parmesan, green onions, Worcestershire, soy sauce, sesame oil, Sriracha and garlic powder; season with salt and pepper, to taste.
Spread crab mixture into the prepared baking dish; sprinkle with remaining 1/2 cup white cheddar cheese.
Place into oven and bake until bubbly and golden, about 20-25 minutes.
Serve immediately with won ton wrappers.