It generally is meant to work as fanservice so that those stuck watching people play the game or people playing the game can have something nice to look at.
Scrawny female fighters are more visually pleasing than other fighters, it is a normal thing in those games, but, there are mods you can find that provide non-scrawny female fighters.
YOu dont beat them up...you whoop that scrawny butt
to win iori beat the coputer twice with different tipes of iori.to win orochi beat computer once with enybody
you beat Guhnashes three brain and then you beat the game
you beat him ;)
You have to beat some one to get him
Beat you DOwn by Downstait
you beat dr diggens and find friggey than beat him agen
Kill the Zombies
Defeat Guhshan's brains.
In the toilet
beat dynal the third time and he will join