Gabe is a lovable nerd who is in love with Patricia Wan. He's a teacher at the local high school and is oblivious to the conflict between his daughter and Patricia.
When first played, Gabe is 25 days away from becoming an elder. This makes him far too young to have a teenage daughter. It is implied that he had access to the Elixir of Life at some point of his life. All of Gabe's memories, including those of breaking up with his wife and his parents' deaths, have the green background which marks them as positive. This happens with all pre-made playable Sims from Riverblossom Hills.
Gabe's face is a slightly modified version of a pre-made face from Create a Sim. The face is in the bin for adult males with light skin (skin tone 1), and has a blond mop top and glasses. This CAS face, if used on toddlers or children, has a shrunken chin and plump face.
Chester Gieke, Jason Greenman, and Trent Traveller also use slightly modified versions of this CAS face. There are other versions of this face which can be found in the bins for child, teenage, and elder males with light skin, and young adult males with tanned skin. Blair Buckingham uses the elder version of this face with no further customizations.