What if Superman, The Martian Manhunter, Captain Atom, and Firestorm were faced with an enemy so powerful they had no choice but to merge themselves into one super-being. Once they were merged they would have a single consciousness and all their abilities and powers would be merged together and exponentially magnified.
 
Now my questions are 
1. How powerful would this being be?
2. What kind of threats could this being take on?

• As powerful as the writers feel is needed for the situation.
• Any and all threats the writer feels like pitting this individual up against.

• The character's name would obviously be Sue Mary.
  

"

• As powerful as the writers feel is needed for the situation.
• Any and all threats the writer feels like pitting this individual up against.

• The character's name would obviously be Sue Mary.
  

"