Mejir is a container (mysterious creatures that function like white blood cells and cull populations, they can influence people’s moods, and most of them blend in with humans) and the son of Sam Dayner. He’s ridiculously smart, charming, and adores his adoptive mom. He’s also really, really into parkour. Though you won’t see too much of him in the Allison Dutch series, you will be able to spot him (and maybe even hear from his point of view) in other series. His song is Mirror’s Edge by XV. It suits his delightful disposition, his penchant for jumping off walls, and his feelings about the impending war.