How to Make Melee

You'll need to animate your characters in an external package, import that into Unity, and play the animations in response to events in your game. It's not a trivial process, and you're better off looking up a tutorial on the subject, like this one from CGCookie.

Also, you might want to go over your questions history and accepting the answers people have given you. Else fewer people will be inclined to answer your future questions.