Halloween Zombie Meatloaf

Name: Halloween Zombie Meatloaf
Ingredients: 1.5 pounds ground beef; 1 small onion, finely chopped; 0.75 cup buttery round crackers, crushed; 0.66666668653488 cup milk; 0.5 cup finely shredded sharp Cheddar cheese; 2 eggs; 1 tablespoon Worcestershire sauce; 1 teaspoon seasoned salt (such as Morton® Nature's Seasons® Seasoning Blend), or to taste; 1 hard-boiled egg, cut in half; 0.5 cup ketchup; 0.25 cup brown sugar; 2 tablespoons barbeque sauce (such as Stubb's®); 5 cloves garlic, cut into small pieces