Mina

Mina is the former member of the hero party until Arios' betrayal towards her and the others as well he was stripped as a hero.

Personality
Mina is a wise and thoughtful person but thinking Arios Orlando is the only one who can take down the demon lord, she blindlessly forced to aid him all along the journey which also made her to deem Rein Shroud useless.

However, she was devastated by Arios' betrayal. After Arios' second defeat by Rein, Mina developed her hatred towards Arios and viewed him as a traitor.