Street Fighter's Main Character: Ryu
and how significant is SF to nintendo? the chances of an SF character appearing in brawl sound... extremely low. besides, SF has more than 1 main character.
To be fair, Metal Gear isn't very important to Nintendo(Ninty has only ever gotten ports, or non-canon spinoffs, never mainline games, and several of the games have never come to Nintendo), but Snake still got in.
SNK's main character: Kyo or Ryo
the main character. there cant be 2. besides, insignificant to nintendo?
Once again, that's sort of Moot. At this point, Metal Gear has 3 different main character to the series, as does the Earthbound series and Pokemon's main character (The trainer) hasn't even been represented in Smash.
Mortal Kombat's main character: Liu Kang
not officially?
Yes officially, Liu Kang was the canon winner of every Mortal Kombat game, and was oficially the main character. Thats why when he was "killed" in MK:D, it was such a big deal.
Soul Calibur's Main Character: Kilik
ehhh... no, he isnt
You're right, That honor would probably more go to Sophitia, Siegfried, or Taki (Who were in the original game). I don't know enough about the series, to be honest.
Tekken's Main Character: Jin Kazama
hmmm... why he isnt the special guest tekken representative? wasnt in the first and second game. he isnt exactly a main character.
Then who is Tekken's main character? I don't know Tekken.
So yes, Fighting games have main characters, and those are the characters most likely to be chosen.