He has dark blue eyes. The only one of his ancestors who also had dark blue eyes was his great-great-grandfather Proteus Pantalone. According to Benedick's Sim DNA in SimPE, he has the recessive allele for brown eyes and brown hair. Also when editing in SimPE, his zodiac sign is not recognized. This could explain why he doesn't have a zodiac sign mismatch in-game like most pre-made playable Sims from the base game do. Benedick also has a hidden FamilyAspiration token, which hints at the aspiration EA wanted for him.
Benedick is a central character in Shakespeare's Much Ado About Nothing. In the play, he falls in love with Beatrice, who was not his sister in the play.