(It's one char / week, technically. Not an user. Also, thanks for sticky!)
Oh... I think saying overjoyed in every situation would be enough.
No? Oh yeah, ok.
"
What he meant by this is I have an active voice, the kind everyone hears from far away and pay attention to, a lighthearted but charismatic presence can be felt just by hearing me !"
...Which is the problem, you just can't speak as normal people do, right?
"
Why should I ? I AM Nikoleis, after all !"
You forgot to mention the constant sarcasms and/or joking tone. Anyway, to put things simple, it's a cheerful, a little higher pitched Zelos from Tales of Symphonia. (Example below, starting at 2:45)
http://www.youtube.com/watch?v=ji7h8LvaPNs&hl=fr