Here are some videos of all the Organization members in action, including the ones who sadly couldn't make it to KH2. A little sidenote, some of these videos show players using gameshark. I really wish I could've found non cheating videos but oh well. These are in the order in which you fight them for Soras story:

Axel 1: http://youtube.com/watch?v=1jFhNbHSJTA&search=axel

Larxene 1: http://youtube.com/watch?v=7bCl196DEuc&search=Larxene

Vexen 1: http://youtube.com/watch?v=oiON31ql0Xs&search=Vexen

Vexen 2: http://youtube.com/watch?v=os_20b1ipmg&search=Vexen

(NOTE: A possible spoiler, so I won't reveal the name, but before you fight Larxene a second time, there is another boss battle)

Larxene 2: http://youtube.com/watch?v=5-QZg-DkKdg&search=Larxene

Axel 2: http://youtube.com/watch?v=VvBeGQbYPEo&search=Axel

Marluxia 1: http://youtube.com/watch?v=9NZeWO5Nq...ch=Marluxia%20

Marluxia 2: http://youtube.com/watch?v=YanacX_or...ch=Marluxia%20

Riku's story:

Vexen: http://youtube.com/watch?v=n1RsoEuLT...0of%20Memories

WTF?! IS THERE NO ONE WHO KNOWS HOW TO BEAT THESE GUYS WITHOUT USING GAMESHARK?!! Oh and I couldn't find anything on Lexaeus...