Saw this exact question being asked in the peepshow subreddit, which I'm not subscribed to but came up in my recommended.
So thought I'd ask it here, my favourite minor character from South Park has to be halfy. He was literally in like 2 episodes and then we never saw him again :'(
Who's yours?
Craig. He always has some sh*t to say about something. Love him. He's never wrong either. Everything is said deadpan & I love it.