Matt (マット, Matto) is Mello's friend who lends him aid on the Kira case. Like Mello and Near, and earlier, L, Matt was raised at Wammy's House—Watari's orphanage for gifted children in Winchester, England.

Mello (メロ, Mero) is the older of L's two successors raised at Wammy's House, Watari's orphanage for gifted children in Winchester, England. When Roger asks that Mello and Near work together to capture Kira, Mello refuses, pointing out the differences between them.