Kirby is, as we all know. Cheerful beyond all reason. He's bubbly and happy almost all the time, but I'm not afraid to let this puff show more than just happiness on a day to day basis. His age is, I'll admit, confusing because most would place him as a child. But to me, Kirby is seen to be much older, especially with how old his species could potentially live for. So honestly, from child, teenager, to young adult, any of those specifications could fit Kirby. So try what you'd like. It's hard to imagine this pink puff with a voice that isn't high and pitchy, but know that I do not want him to have a voice like that, so I'm interested to see what kind of voices audition. However, my preference would be a girl's voice, however, that shouldn't discourage the dudes, I'm open to hearing all auditions.