OHA has more characters than you can shake a stick at, but because nobody wants to go through all of that stuff, just the main ones are listed.
Gelidus Talinu: The blue haired trouble magnet
Elhaz Nightstalker: Dream Seer, Astral Mage, resident prettyboy
Goju Maridae: Resident dragon
Indra: Required insane catgirl assassin
Aspen "Bryan" Nightstalker: Problem child
Crescendo Tallinu: Angsty teenage halfbreed
Kellroth: Leader of the Axis of Evil
Loki: Arch Demon of Chaos, High Bishop of Maggots (hehe)
Rio Novalight: Doomed time clerk
Supporting Cast: Lilith, Agni, Zara, Flaxen, and those other losers ;p

 
ehehehe...the cast

 
Scented//suntan lotion...One Hour Axis and Anime Highschool are R.Hartman 1994-2003, any other characters showing up in cameos are (c) their owners. Please don't take my images! I'll sick Geli on ya...not wise."Midnight star I wanna know!" This website is created by Kectug. The images on this page were made by Mutant X-ing Productions. Geli is (c) KECTUG