Frieren is the titular character of the series 'Sousou no Frieren', also known as 'Frieren: Beyond Journey’s End'. She is an elven mage who was part of the hero's party that defeated the Demon King. As an elf, Frieren has an extraordinarily long lifespan, which leads her to experience life differently from her human companions. After the hero's journey ends, she embarks on a new quest to understand humanity better and to come to terms with the passing of her companions. Her character is introspective, wise, and somewhat aloof, highlighting themes of time, memory, and the fleeting nature of life.