Since the summer movie season is here, I thought of any character from a Marvel movie or a DC movie or a Independent comic movie.
Examples could be, Superman vs Hellboy, or Wolverine vs Kickass, Batman vs Captain America.
With leaving it more open gives the artist a little more freedom, also feel free to add Hancock to the list if you wish.
Everyone finishing school and early vacation though maybe a month would be a god time to end, like June 19th.
Let me know what oyu guys think and if this topic is to vague.