Dustin, similar to his sister, is a very fun, calm, and relaxed person. Although, he is the more serious of the two. Having to look out for her for years has lead him in be overprotective and untrustworthy when it comes to strangers.
He can often be rude, and snarky when his sister is mentioned in a negative way, he doesn't care much for his safety, but for his sister's safety.
Although, Dustin can also be quite flirty when he feels like it. He has magnificent social skills, and is an expertise in seduction. He occasionally travels to Earth for one night stands, and sometimes in the Elemental Dimension.
This habit stopped when he met Selene.