Kazuma Shienza

"'I might not be an elemental, but I truly believe in my heart that both nations can get along; both light and shadow.'"Kazuma Shienza is the headmaster of Kazuma's School for Elementals.

History
Almost nothing is known about Kazuma. Even his appearance, his personality, and preferred nation. He's a complete mystery; but from the creator of the series itself, here's a backstory I came up with that has a credible ring to it.

Kazuma was born in a loving family. He had brothers, sisters, cousins, and loving parents. Everything in his life was perfect, and he had many friends, acquaintances and was loved by many for his striking personality.

One fateful night, he awoke to find everybody dead. At first, he turned to meditation, to contact The Storyteller for help; she told him he would find the answers he sought in his heart. So he started wandering. About 50,000 years ago. Eventually he came across the temple The Storyteller prays from, and the open portal. Worried, he ran forth - but it vanished all of the sudden. He heard otherworldly spirits talking to him - and he was granted immortality, on the price that he would forever lose his identity. It wasn't a deal he wanted to make, and made his suffering worse. But with her gone, he felt the world needed something new. He prayed to her again, and she created the elementals - it was his idea.

So whenever Kazuma is heard talking, you never see a trace of him. Not a shadow, nor a light. He's like a ghost, and yet he isn't. When he speaks, all you hear is a monotone (just imagine... the robot voices totally do a number on all this).

As it was his idea to create the elementals, he also decided to establish a school for them. Due to the deal he had made out of fear with the otherworldly spirit, he was now immortal. The Storyteller helped calm him down, and he truly realised he had no memory anymore. He'd forgotten joy, fear, love, sadness and all his past emotions. He forgot how to feel emotions.

So The Storyteller renamed him Kazuma Shienza, and they never spoke again. He has been the mysterious headmaster of the school ever since, living on.

To be clear - Kazuma Shienza may not be one of the main characters, but he's incredibly important to the foundation and future of Kazuma's School for Elementals. As he forgot his emotions, he doesn't believe in inequality, and lets everyone in. But he allows them to fight amongst themselves anyway. He also established history and made the suggestion to create the elementals in the first place.