May I change my last name?

[TouchandFeel]

Sad is.. I wanna use my RedDemon instead on Reddemon. Kinda.. small name for Aggressive kitty ( Miqo'te) +(

Don't get me wrong, I support your desire for being able to change character name through some sort of service, I was just expressing that I don't like immersion breaking and often times horribly unoriginal names for characters in MMO's.

Perhaps a possible solution is something that I like to do when making character names.
Start with an idea that I want for my character name, in your case "Red Demon" and then figuring a way to rework the word/words into something that fits together in one word and that sounds cool as a name. I personally like translating things into Latin or French and then combining the words and giving it a little twist to make is sound right as a name.

That is actually how I came up with my character's name "Vesperaeon Vaillantes".
Vesper is "evening time or stars that come out during the evening" in Latin and "Aeon" is an archaic or alternative way of spelling Eon, which is a very long time and has the connotations of being eternal. So I took the words, combined them into a singular first name that roughly means "The eternal evening star". Then the last name is just the French word for "valiant" with an "es" added at the end to make it sound better as a last name for an Elezen.

Just some food for thought on how to maybe rework the name if you do get the ability to change it.