NARUTO Manga Fandub - MAIN CHARACTER CASTING
JT for Might Guy
He is best known for his "nice guy pose," which consists of giving a thumbs up, winking, and smiling with teeth so white they give the proverbial "ping." Despite his odd mannerisms, Guy has shown to be capable of being as serious, ruthless and decisive as a mission's success demands if needed, as seen during the Invasion of Konoha and his battle with Kisame Hoshigaki.
[TO LEE; Passionate, Dramatic, Inspiring]
"That's it, Lee! Let the power of youth explode!!"
[TO NEJI; Confident, Informative, Stubborn]
" I was a failure when I was your age, but now I can even beat Kakashi, the elite genius. It's only a matter of time until Lee finally surpasses you!"
[TO LEE; Sentimental, Emotional, Proud, Inspiring]
"You worked hard Lee, there's no doubt in my mind the surgery will be a success. You have the power to shape your own destiny. And on the one-in-one thousand, no, one in a million chance something to happen to go wrong, I will die right along with you. Since the day I met you, my nindō has been to train you to become the most splendid ninja possible. That's a promise!"
I think your voice would be better suited to other characters, because the delivery here was really good, I just don't think it's deep enough for Guy!