Cheerful, and incredibly innocent, even this version of Goku. Granted, his dream self was even more innocent, really, but the two had many similar qualities that made life interesting. "Oh...you're Kyra, right?" Goku's accent showed just a little bit as he spoke, then, with the r coming out sounding like a mix between the l and the r. It wasn't as pronounced as many Japanese English speakers would do it, but it was there.
"Um, sure, if you'd like," remarked Goku motioning to the mat beside him carefreely. "And yeah, I'm fine. Happens all the time during training, you know." He smiled happily still, the sparkle even reaching his eyes naturally. "And welcome, I guess! You're the first one here!"