After defeating Regalla, you can either kill her or spare her life. The third option does nothing.
If you kill Regalls, then you will get her unique bow. This is a very powerful weapon, so I recommend choosing this option.
In this case, Regalla will keep you company in the last battle. You won't get her unique bow, but you will avoid an extra fight with Ghosts.
New heroes, new challenges.
Deadpool's world is dying.
No release date for the adaptation has been given yet.
There's a new storyline and a new class waiting for us.