I have mastered every fighting technique/combo and variation in this game. but there is one thing i do not know and i have done it a few times without knowing how i executed it.
when being hit by normal melee attacks(punches n kicks) i have parried away the hit making the other person repel back. its similar to if you guess the direction of a hard smash attack or a rolling hammer attack but the repel time is slightly shorter they are not open for as long... if anyone knows how to do this please could you tell me!!

I believe it is done by timing your defense with the opponents attack.
Unfortunatly I'm not sure...

http://www.dailymotion.com/majix101/video/xifiu_neo-5-vs-5-8
I know the move your talking about it's done in the video above a couple times.
I'm not quite sure how to do it but i know it's with square somehow?

ah i see what your saying, but the ones in this video are hard punches and kicks being repelled, I'm talking about how do you repel regular punches and kicks

Down + O

when you do it, you kind of go still for a second. If they attack when you are still, it makes a loud bang noise.

While you are boh using normal kicks and pucnches at the same time, use this move.

I have mastered this...helps me get perfecxt in all of the ultimate battle z

wen u kick n punch and then press dwn + o it meks u teleport if u just press o then u assume that wierd pose. but its not the thing wer u mek sum1 repel, coz it doesnt seem to be happenin here lol

why do people just say its just down and circle that is clearly wrong cuz that dont work

But it is

Yikes... Ok.

If you press UP+Square at the exact timing of the opponents impact, you'll break their combo.

It's in my 3rd tutorial on youtube. Here's the link:

http://www.youtube.com/watch?v=S2-OIAVo-RU&feature=PlayList&p=03CE3F779DD3B7D7&index=2

I've been fairly busy so I don't come around here much but if you have a youtube account, message me if you have questions.