Mix the cream cheese, imitation crab, sugar, white pepper, and salt until well combined.
Chop the green onions and add them to the cream cheese mixture.
Place wonton wrappers on a flat surface and add about 1 teaspoon of the cream cheese filling to the center of each wrapper.
Fold the wrappers into a flower shape and seal the edges.
Heat oil in a pan and fry the wontons for about 1 minute until golden brown.
Sweet and Sour Sauce
For the sweet and sour sauce, combine the sugar, corn starch, vinegar, pineapple juice, water, salt, soy sauce, and ketchup in a saucepan.
Bring the sauce to a boil and let it thicken, stirring occasionally.
Serve the fried wontons with the sweet and sour sauce.