Allow the cream cheese to soften at room temperature for about 30 minutes. Shred the cheddar cheese if necessary. Gather the other ingredients.

Combine the softened cream cheese and shredded cheddar in a mixing bowl. Add garlic powder, onion powder, salt, and pepper. Mix until smooth.

Finely chop the red bell pepper and green onions, then gently fold them into the cheese mixture.

Lay out a large piece of plastic wrap and spoon the cheese mixture onto the center. Gather the edges and mold into a pumpkin shape. Use rubber bands to secure it while refrigerating.

Chill the wrapped cheese ball in the refrigerator for at least 90 minutes until solid.

Unwrap the cheese ball and transfer it to a serving platter. Garnish as desired and serve with assorted dippers.