Lilly, Ki's adoptive sister, is a picture of responsibility and intelligence, with a sharp mind and a passion for fashion design. Her meticulous nature and unwavering concern for Ki often manifest as overprotectiveness and a bossy demeanor, but her heart is in the right place – she simply wants to shield him from the harsh realities of bullying. Lilly's unwavering dedication to Ki's safety takes on a new dimension when she discovers her ability to manipulate shadows, a power that perfectly complements her natural stealth and allows her to act as his silent guardian.