May I introduce you to Ayiti and Sanris, who are sure to make Zitao's long list of Irritating People! Ayiti is extremely naive and tirelessly energetic, as well as being a bit of an airhead. She'll be hopefully setting off on her own soon and I'd love for her to run into Zitao somewhere. Sanris is the opposite (though he's just as exciteable) -he's a moody, grumpy bully-coward.
(We could also do a plot with either of these idiots and Katari, but I haven't thought of a good one yet.)