All of Sonic voices fail, all but Shadows from S.A. 2. (English voices at least, in 95% of Sonic's games they don't go with the character mouth =/, Sonic Team gotta reforce there, the Translations they're making are worse everytime.)

SD(This being the SD root)>Private>wii>app>RSBE>pf>Fighter (Here you make a folder for the respective characters and inside put the .psc/.pac/fit***motion
[For example: Fighter/marth/FitMarth01.psc (This'd be the costume)]
SD>Codes>RSBE01.gct (This would be the code file you'd use that Gecko will be loading)

Try setting stuff in order in case those are the problems.

Are you using Custom Song Names? Last time I had to put a "?" on everything on the common3.pac for this, if you aren't, try making a Backup of your SD and format it, then get everything inside again and try, if not, try telling us where do you have place the "codes", and codes you're using, and if possible, the Folders where the Brawl Hacks (RSBE-pf) are placed and which are you using, no need to name the files inside "fighter".

Hmm, try asking the top Vertex Hackers around, LookItsLink or Jack H could help you on that.

The costume froze?XD

http://forums.kc-mm.com/Gallery/BrawlView.php?Number=4198&Moderated=All

That one might help you more (Hair wise)

One of the Links is a "supposedly update" of Sephiroth, I'm not really sur eif Hair was edited, but who knows, hope you get Soren to look alike, since it was a shame FE: Radiant Dawn had no MDL0s D:

http://forums.kc-mm.com/Gallery/BrawlView.php?Number=3420&Moderated=All

Which ever suits you the most, you'd still need to edit it a lot, thought, since it's too long and actually too straight I think.

Hair!Hair!Hair! Maybe you could use the Sephiroth Vertex' hair and edit it to Soren's from there.

It still works on the rest thought.

On that note can someone vertex it to look like actual lips? Texture would be needed but it's just flat as is.

^ It'd really help a lot having an unmasked Sheik model/texture.

Can I ask for a maskless Sheik?

It'd be great if in the future that Staff would become a Tome. xD (You said book already, forget this. xD)

Damn this is making me get into Vertex Hacking myself. :3

Oh man, I'm just interested in knowing if there'll be a Vertex Hack for Soren, that'd be totally awesome!