Unlike his parents, Tommy has no interest in settling down, and instead desires a life of adventure. It matters not if it's urban or rural; fully equipped or bare bones; hot or cold; dry or humid. Tommy has gone on vacation with his parents before, but has always felt like their trips left something to be desired, and longs to go beyond the boundaries. Like his parents, he doesn't mind getting dirty, but he doesn't mind being away from home for months at a time.
Tommy shares a very close bond with Jared; he is seldom seen without his brother by his side. They share the same personality, skills, interests, and even hobby enthusiasm, and try to befriend the same people simultaneously. While the twins sometimes fight, they recover quickly and suffer no long-term consequences from it.
Tommy used to be an A+ student, although his grades have dropped recently.
Tommy and Jared speak an idioglossia—a language that only the two understand. Although they communicate with each other in Simlish most of the time, they use their invented language occasionally, especially when sharing secrets or to prevent others from understanding what they're saying.