Place the pork pieces between sheets of wax paper, then pound until each steak is about ¼ inch thick.
Place the pounded pork in a zip lock plastic bag.
Add the onion, scallion, cumin, garlic, salt and pepper. Refrigerate for 1 hour or overnight. Be sure the steaks are evenly covered.In a large skillet, heat the olive oil over medium heat.
Place the pork into the skillet and cook for 5 minutes per side or until the pork is cooked.To make the shrimp:In a small bowl combine onion, lime juice, ketchup, mayonnaise, pepper,hot sauce and cilantro.
Place an arepa on a serving plate, top with the pork and place the shrimp on top of the pork.
Sprinkle fresh cilantro, drizzle olive oil and serve.