Heiter

Heiter was the alcohol-loving priest of the Hero Party. After the Hero Party was dissolved, he returned to the Holy City and eventually became a bishop.In his last remaining years, he adopted the orphan Fern and raised her. When Frieren came to visit him 20 years after Himmel's death, he asked Frieren to adopt Fern and train her as her apprentice.

Personality
Heiter is known as a drunkard, which is why Frieren calls him "Corrupt Priest". He eventually stops, as he realizes that his body can't take it anymore.Heiter felt his approaching death a long time ago.So, he asks Frieren to help him translate a book that might have the secret to let him live forever or be resurrected, though he is fine with just having more time on earth.

Appearance
Heiter is a bespectacled Priest with green hair.

Frieren
Frieren light-heartedly calls him "Corrupt Priest" due to his affinity for liquor. They were good friends and companions in the Hero Party.

Twenty years after Himmel's death, he asks Frieren to help him translate a book that might have the secret to let him live forever or be resurrected, though he is fine with just having more time on earth. However, this is later revealed to be a ploy to keep her around and have her train Fern until she could protect herself when he was gone, and subsequently, have Frieren take her under her wing when he's dead. Frieren notes that it seemed like he was not afraid to die, but he admits that was a mask he wore beneath his smiling appearance to show off. As seen in his final years where she lived with him, the two really do deeply care about each other.

Fern
In his last remaining years, he adopted the orphan Fern and raised her. When Frieren came to visit him 20 years after Himmel's death, he asked Frieren to adopt Fern and train her as her apprentice. Heiter was a good father figure to Fern. She became strong so he would not have to worry about her anymore and could pass away in peace, and to this day she still misses him. In his final days, he wished for Fern to be strong enough so that he could pass in peace without regret.