Like all pre-made townies, Leo's relationships with other townies are usually randomized at the start of the game. Like all pre-made elder social class Sims, Leo is unemployed at the start of the game. However if certain other expansion packs are installed, the game may randomly assign him a career to match his social class, when he is first spawned in-game.
As far as personality, Leo is somewhat neat, active, and nice. But he is quite shy and somewhat serious. Like all pre-made elder social class Sims, Leo has no pre-set skill points. He is mostly interested in Culture and Politics. Leo has the same facial structure as Blair Seavey. According to his SimDNA in SimPE, his hair was blond before it turned grey.