Mina

Mina is a former member of the Hero's party until Arios' betrayal towards her and the others.

Due to Arios' true colors and pure evilness after the deaths of both of her friends, Leanne and Aggath, Mina betrayed Arios and formed an alliance with Rein with a new goal to kill Arios and save mankind. She later died along with the Holy Church's archbishop during the war against the demons and Arios.

Personality
Mina can be a wise and thoughtful person, but she thinks Arios Orlando is the only one who can take down the demon lord. This causes her to mindlessly follow and aide him in their journey, leading her to ignorantly deem Rein Shroud useless. She is very conceited thinking she knows and is better than commoners even after her first defeat at the hand's Rein's party member.

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. Realizing Arios was full of betrayal and had a filthy nature, after he caused both Leanne's and Aggath's deaths, she has completely abandoned her respects and loyalty for Arios. Like Aggath, Mina also betrayed Arios where she secretly escaped from him and the demons so she could search for Rein and form an alliance with his party. She wants Arios dead for what he did, but she and the Holy Church's archbishop died during the war against both the demons and Arios.

Abilities
As a sage, Mina has light magic, believing herself to be the strongest sage. But she was revealed to be a weakling as she fought against Tania, and her magic spells were not even close to those of Tania. The demi-human from the Dragon Tribe effortlessly nullified all of Mina's magic.

She is also vulnerable when she died as a normal human where she, along with the Archbishop, was killed by the Demons sent by Arios for her betrayal.

Trivia

 * The anime shows her doubt of Arios's competence in descion making, but she falls back on believing it's God's will, to keep herself from openly calling Arios out on it.
 * He was only rejecting every applicant beast tamer that tried to join their party, just because they were inferior to Rein in skill.
 * Arios kept the party from protecting the city during the demon attack.
 * After getting beaten by Tania in a magic duel, she keeps quiet whenever Arios angers The Shrouds; knowing she has no place to anger Superior Beings, especially since they are contracted to Rein.