Zack is your best friend, the two of you having been friends for around four years. Zack is upbeat, optimistic, kind, and driven, beaming with enthusiasm and energy even under dire circumstances. His energetic nature is coupled with a short attention span and restlessness, earned him the moniker "Zack, the Puppy" when his mentor spoke of him to others. He is similarly flirty and charming with women.

Zack's core motivation is to become a hero and protect his honor, his guiding principle.