This is just a little something I've found out:
For Player One (I dnt feel like posting out the other chars. atm)

This Code Completely Changes The Name (Found By Me)
Code:
221D905E 000000XX
221D905F 000000XX
221D9060 000000XX
221D9061 000000XX 
221D9062 000000XX
221D9063 000000XX
221D9064 000000XX
221D9065 000000XX
This Code Only Changes Your Name While In Bed (Found by me also):
Code:
222AEBAE 000000XX
222AEBAF 000000XX
222AEBB0 000000XX
222AEBB1 000000XX
222AEBB2 000000XX
222AEBB3 000000XX
222AEBB4 000000XX
222AEBB5 000000XX
This Code Only Changes Your "Inventory Name" (where the slots are, also found by me):
Code:
223BE562 000000XX
223BE563 000000XX
223BE564 000000XX
223BE565 000000XX
223BE566 000000XX
223BE567 000000XX
223BE568 000000XX
223BE569 000000XX
I did make a town name changer (will remain unreleased) and I found more of those multiple name codes which I won't post here. I know this post was useless but eh