In a skillet over medium heat, brown the ground beef along with the diced onion and minced garlic until the meat is cooked through and the onions are translucent. Drain any excess fat.
Transfer the cooked beef mixture to the Crock Pot. Add in the black beans, corn, diced tomatoes (with juice), beef broth, chili powder, cumin, paprika, salt, and pepper. Stir to combine all ingredients well.
Cover the Crock Pot and cook on low for 6-8 hours or on high for 3-4 hours, allowing the flavors to meld and the soup to thicken.
Once cooked, taste the chili and adjust seasoning if necessary. Serve hot in bowls and let everyone customize with their favorite toppings.
For an extra touch of Halloween spirit, consider garnishing the dish with a few "spooky" decorations, such as ghost-shaped tortilla chips or cheese cut into bat shapes.