First person: I (soft, polite) Second person: Karma, Kayano, Koro-sensei (Addresses other boys with -kun, girls with -chan. Addresses Nakamura and Okuda with -san)

First person: I (rough, casual) Second person: Nagisa, Kayano-chan, Sensei (or Octopus) (Addresses others without honorifics. Addresses Okuda with -san)

First person: I (standard) Second person: Nagisa, Karma-kun, Koro-sensei (Addresses other boys by surname + -kun. Addresses girls like Nakamura with -san)

Guest's ally. First person: I (boyish, casual) Second person: Killua, Kurapika, Guest, Karma, Nagisa, Kayano, Koro-sensei

Guest's ally. From the Zoldyck family. First person: I (cool, casual) Second person: Gon, Kurapika, Guest, you (blunt, to Karma's group), Octopus

In love with Guest. Guest's ally. From the Kurta Clan. First person: I (polite, formal) Second person: Killua, Gon, Guest, Akabane, Shiota, Kayano, Koro-sensei

Treats Killua and the others as if they were his own students without permission.