Onslaught Part Four is the part of this big Marvel story. It is very exciting and very sad. The heroes have to deal with Onslaught, a guy who came from the bad thoughts of Professor X and Magneto. This is where everything happens. It is very sad to see what the heroes had to give up. The X-Men the Avengers and the Fantastic Four have to work to stop Onslaught. They have to fight with all their might to save the Marvel universe. This story is huge it is very emotional. It is full of action from start, to finish. If you like Marvel stories that're big and exciting then you have to read this.