Strangely, Dustin has a memory of losing a fight to Gordon, possibly a friendly fight, hence their relationship. Like all burglars, Gordon is characterized by dressing in complete burglar apparel. He and Kaylynn Langerak are the only two pre-made Pleasantview NPCs that already have relationships with pre-made playable Sims.
Oddly, Lilith Pleasant and Dirk Dreamer have memories of being caught after sneaking out by Gordon. The Caliente family photos and Nina and Dina Caliente's memories reveal that Gordon was also the same burglar that robbed the Caliente household.
It is impossible for a teenageSim to have a fight with an adult Sim in normal gameplay. Therefore, Gordon was probably a teenager when he and Dustin had the fight. Ironically despite being a burglar, he has no interest in crime.
When Gordon appears in custom neighborhoods, his personality, interests and skills will be different from the ones he has in Pleasantview, seen below.