Diego “Deeze” Reyes is Karen’s older brother, who has a dual nature of being both nurturing and volatile, greatly influencing Karen's love for art.

Anka Silverberg is a neighbor in Karen's apartment complex and becomes the center of a complex mystery that fuels Karen’s investigative journey.

Karen's mother is a strong and protective figure in Karen’s life who provides support and guidance amidst their struggles.

Sam Silverberg is a jazz drummer and Anka’s husband, whose grief and sorrow over her death are palpable.