Who stops him?
Plastic Man enters the Marvel Universe and immediately gains the attention of Reed Richards.
The two confer and during an experiment gone wrong, become fused a-la-Firestorm where both consciousnesses are in Plas' body. Reed's strategy and planning are now available to Plas along with his own craziness and creativity.
The new being goes on a tear through Marvel villains... who stops him?
He also has to face the Avengers, 1 by 1, any chance of them stopping him?