Here comes the most anticipated segment for comparison of these two characters i.e. Mister Fantastic vs Onslaught superpowers. Powers and abilities define their strength, both physical and mental. So what will happen if these two super characters engage in a fight? Here you can compare Mister Fantastic vs Onslaught powers, abilities, weapons and gadgets. So lets check out Mister Fantastic Powers and Onslaught Powers.Decide who is more powerful!