My apologies for not doing this originally
Tuska
Black hair, Hairstyle is that of L's from Death Note, black eyes - when he's older he starts to look like the guy in the cover
Tokira
Red hair, hairstyle similar to that of Sung Jin-Woo from Solo Leveling, black eyes
Yuta
Black hair, Hairstyle is that of Hyakkimaru from Dororo and if anyone is wondering, Yuta is 17