Leanne

Leanne is former member of the hero party until it was disbanded due to Arios lost his status as a hero from his betrayal.

She was betrayed by both Arios and Monica for being useless to them, as well demonized by Monica. She was killed by Rein (unintentionally) to put Leanne out of her misery. She was later buried by both Rein and his companions.

Her death has caused both Aggath and Mina to betrayed Arios after they've realized how evil he truly is where they also died at Arios' hands.

Appearance
Leanne is usually seen in a mage outfit with long purple hair. She wears a large hat.

Personality
She is haughty and arrogant and like the others looked down on Rein. But she still admitted that Rein's skill of taming Strongest Races are impressive as far apologized to him when accepted her defeat at his hands (unlike Arios who refused to accept his defeat).

She was shown to be devastated when Arios betrayed her and the other Heroes but still sided with him. Like Aggus and Mina, Leanne now has hatred towards Arios for his betrayal and after he let Monica of betraying Leanne without a second thought where Leanne turned into a demon by Monica and killed by Rein and his companions.

After became a demon due to both Arios and Monica's betrayals towards her for being useless to them now, Leanne became a mindless monster when she cannot control her emotions and struggled by her transformation, until Rein and his companions to put Leanne out of her misery and freed Leanne when Rein (unintentionally) killed her.