Sid the Sloth from 'Ice Age' is such a lovable disaster—if he were human, I imagine he’d be that one friend who’s always a little disheveled but somehow charming. Picture a lanky guy with perpetually messy hair sticking up in odd directions, like he just rolled out of bed. His eyes would be wide and slightly unfocused, giving off that 'oops, forgot my glasses again' vibe. He’d probably wear clothes that don’t quite match, maybe a shirt inside out or mismatched socks, because he’s too distracted by his latest half-baked idea to notice.
His posture would be slouched, with a grin that’s equal parts goofy and endearing. I’d bet he’d have a habit of talking a mile a minute, tripping over his words when he gets excited—which is often. Sid’s human version would radiate chaotic energy, like someone who’d accidentally set off a fire alarm while trying to make toast. But you couldn’ stay mad at him because he’d just laugh it off with that signature dopey charm.