Sun Young Kim is notable for putting up possibly the greatest fight against Dedrick's romantic advances of all the girls he has WooHooed with. Despite coming all the way to Bridgeport to see him again, she rejects him several times before WooHooing with him, and even then he has to become the Master of Seduction first. Part 29: Sun Young NEVER is a great example of Sun Young's character when she is shown kicking Dedrick out of the elevator for trying it on with her. She finally accepts Dedrick's advances in Part 32: Aria Hilton and becomes pregnant with their son, Kim Chong.
Sun Young Kim is also significant for living as what is possibly the Sims equivalent of an illegal immigrant; once in Bridgeport, she refuses to go home. The exact cause of this glitch is unknown but it is possible that Sun Young Kim got stuck in Bridgeport somehow. Another possibility is that she stayed in Bridgeport as a tourist.
When Sun Young Kim first arrived in Bridgeport, Dedrick was too late when greeting her and she turned around and started roaming the streets of Bridgeport although she was supposed to be a houseguest. The game later glitched and she essentially became a normal townie sim; she has no house, yet she still exists in the town and can be occasionally seen walking down the street or at community lots. Instead of staying the allotted three days (or at Dedrick's apartment, for that matter), Sun Young Kim never goes home and instead remains in Bridgeport forever as a townie.