In a bowl, mix the cream cheese, crab meat, green onions, soy sauce, garlic powder, onion powder, and black pepper until creamy and well combined.
Place a small spoonful of crab filling in the center of each wonton wrapper.
Dip your finger in water and moisten the edges of the wrapper. Fold the corners together and pinch tightly to seal so the creamy crab filling stays inside.
Heat vegetable oil in a deep skillet or pot to 350°F.
Fry the crab rangoons in batches for 2 to 3 minutes, turning as needed, until golden brown and crispy.
Transfer to a paper towel lined plate or wire rack to drain. Serve warm with sweet and sour sauce or chili sauce.