Justin Kim is a recently out-of-work child actor who is trying to adapt to a simpler lifestyle along with his family in their Nuclear Nest House. He is the only son of Cynthia Kim and Robert Kim; and he has two pets; Gabby and Cheech.
If you look closely at him and Xander Roth, you can spot how similar they are (i.e. similar clothes, hair color, hairstyle, skin tone) except Xander has green eyes, and sunglasses. Their facial features are also quite different. It is impossible for Justin to be an actor in-game since children can't have jobs. While Justin has grey eyes both of his parents have brown eyes.
When his family is first moved into a neighborhood, Justin is 8 days from becoming a teenager. He has the same personality as his mother. Justin is the only pre-made playable Sim from The Sims 2: Pets that doesn't use the 2nd face template. Instead he uses the 10th Maxis face template in Create a Sim.
|The Kim Family|
|Robert - Cynthia - Justin - Cheech - Gabby|