Light vs DoctorDoom
So YagamiLight from DeathNote gets dropped into the MU (along with the DeathNote and Ryuk) and is on a mission to kill Doom. A cover identity for exists already so he won't seem out of place.
Doom does not get any information about Light. Light will not become Kira but otherwise everyone must stay in character. No other heroes or villains from either world will become involved in any way.
1) Light has 6 months
2) Light has 1 year