Sage is a former Ultimate, the father of Diane Bellerose, and a close friend of Mathias Fisher's. Despite the difficulties he's faced in the past, Sage consistently does his best to maintain a pleasant and friendly demeanour. However, it's clear that he's grown somewhat weary over time, often finding the rapid passage of time difficult to keep up with. Still, for the sake of his family and friends, he insists on doing his hardest.

Sage's voice should be of a low-medium pitch, sounding relaxed, gentle and friendly most of the time. On occasion though, depending on the circumstances, his voice may become more hesitant and weary or somewhat serious.