Knuckles is independent, wild,[29][30][31] hot-blooded,[32] tough,[29][30][31] and a loner by nature. If Sonic embodies the wind that keeps blowing forward, then the echidna personifies the immobility of a mountain.[1][26] Due to having lived in seclusion for most of his life, Knuckles is a rather antisocial and reclusive individual. As such, he cares very little about what others think, which makes him bluntly honest, straightforward, and somewhat egotistical.[29]

Knuckles is fiercely loyal to Angel Island and does whatever is in his power to protect it. He prefers to stay close to the Master Emerald's shrine to keep a watchful eye over everything at his home. Despite this devotion, the echidna is willing to leave his duty whenever his help is needed.[14] Though he has found other lifestyles appealing, and may even dream of a free one like Sonic's own,[29] he will never trade away his duties as he is far too devoted to his role as guardian, looking very concerned whenever he leaves the Master Emerald behind and spending too much time protecting the giant gem alone.[33] When not performing his duties, Knuckles prefers spending his time practicing his fighting skills, going treasure hunting, or hanging out with his friends.

For Knuckles I want either Dan or Travis but any voice works! If you think your own take would work better go ahead and do that!
voices:
(start at 1:57)
https://www.youtube.com/watch?v=6hO7j7R26QU