Realspawn is right, it looks like a repetition of a lot of characters. Plus I have no right to say this but you should have more then 7 characters, you had 7 characters way back during the days of Mortal Kombat 1 and street fighter 1.
Another idea , developers tend to put a majority of traditional characters as fighters like Japanese games are justified by a lot of sensei and ninjas and American games are justified by army fighters(JAX,Sonya) , moviestars(Johny Cage) or Stree gangs.
How bout putting a stuntman like fighter(like akshay Kumar
) or a mercenary like character(Bhai - eg : Sanjay dutt) or an ancient warrior with armour and stuff.(From time of ashoka).
This game will not only have a high sale world wide but will definately have a good sale in India !