Samantha's ex-boyfriend, named by Carl to rule out that explanation for her attachment to Kimaris.
When Samantha demanded the Kimaris Figure and called Kimaris one of her best friends, Carl asked who Kimaris actually was to her — noting that he knew Kimaris wasn't the ex-boyfriend, because that was King Blaine.
Samantha's answer instead was that Kimaris gave her the fertility potion that let her carry her baby, and then she found she couldn't remember meeting him at all.
Samantha's known ex-boyfriend, invoked to eliminate the simple explanation for her bond with Kimaris.
Also appears in books you've already read — spoiler-safe to their endings: