In a mixing bowl, combine softened cream cheese and shredded white cheddar. Use a hand mixer or spatula to blend until the mixture is smooth and creamy, about 2-3 minutes.

Add garlic powder, onion powder, and black pepper to the cheese mixture. Stir well until all the spices are evenly incorporated.

Once combined, shape the mixture into a ball using your hands. Wrap the cheese ball tightly in plastic wrap and chill in the refrigerator for 1 hour.

After chilling, remove the cheese ball from the wrap. Use black olives to create Jack Skellington's eyes, nose, and mouth.

Place your decorated Skellington Cheese Ball on a serving platter. Surround it with colorful crackers and fresh vegetable slices.