Thanks, As you guessed it's more of a practice I did to get into his character. I always imagine he'd simply be bottling up his sadness for some reason, And really - I don't know how he's able to deal with all the stuff he goes through and able to shrug it off, This was really my only possible thought and it kinda stuck with me. I don't imagine him being a "constant sobber" but basically trapping his true emotions and masking them with a forced smile and whatnot.
I mean, His foster grandfather was killed, His own best friend lies to him and he learns he never even really existed in his "home", and for all we know from the opening at Klonoa 2 he probably spent most of his life possibly eternally resting, being teleported to various places... That's at least what I think, I almost forgot Moonlight Museum Exists, Which was before K2 I believe. And again, I stick to "safe" canon which is the first 2 games. I'm kind of weird like that, I know... It's just easier for me to understand that way.