Drain and rinse black beans and toss in a medium bowl.
Drain the corn and add to the beans.
Chop the green pepper, jalapeno, onion, and tomato and add to bean mixture.
In a small bowl, combine ranch, Italian dressing, Tabasco, black pepper, chili powder, and garlic powder. Pour over bean mixture and mix well.
Refrigerate for at least two hours for best taste.