Damion has the Fortuneaspiration, and the Geminizodiac sign. As far as personality, he is very active, and rather outgoing, but he is quite serious, somewhat sloppy, and rather grouchy. This may explain why his granddaughter Melody is not very playful. Damion has memories of his daughter's mother-in-law, Lauren Tinker, and has a memory of her death. Damion died around the time Wanda got engaged.
According to his SimDNA in SimPE, his hair was red before it turned grey. According to Damion's age data in SimPE, he had 19 days left in the elderlife stage when he died. If he is resurrected, and aged down to an adult, it becomes clear that he uses the 1st of the two broken Maxis face templates in Create a Sim. Damion's facial structure is almost, if not exactly identical to the 21st face template in Create a Sim.