Hello Brawl Vault!!!
I originally wasn't going to share this hack because I thought it was sub-par compared to the other beautiful hacks on this site. BUT in the spirit of the Holidays, here you go!!!

Credits to Thany for the Roy models and overall Roy-standard of Brawl Vault and to Kienamaru and slayermarth101 for the Prince Roy and the back sheathe model

NOTE: I MORE than recommend this to be used with Kienamaru and slayermarth101's Prince Roy PSA, it looks FANTASTIC

Link to their PSA: http://forums.kc-mm.com/Gallery/BrawlView.php?Number=28103

NOTE 2: I don't think this desyncs WiFi

NOTE FROM Kien- I'm pretty sure it desyncs, but only if you use the back sheathe model.