In a large bowl, combine the corn, red pepper and onions. In a small bowl, combine the flour, baking powder, cumin, salt and pepper; stir into corn mixture. Gradually add milk, stirring until blended.
In an electric skillet or deep-fat fryer, heat 1/4 in. of oil to 375°. Drop batter by 1/4 cupfuls, a few at a time, into hot oil. Fry until golden brown, about 2 to 2-1/2 minutes on each side. Drain on paper towels.