Frieren has an easy-going personality; however, her aloof attitude makes her a mystery to her peers, with Heiter commenting that they as Humans cannot perceive an Elf's feelings. As an Elf that has lived for at least a millennium, she has a poor sense of time that manifests in a bad habit of being unable to get up in the morning, along with a deeper inability to comprehend how time passes for Humans. This is, in part, a reason for Frieren's aloof attitude, since she sees large lengths of time as too brief for her to form meaningful connections. For instance, she thought of a ten-year journey with her comrades as short and believed she knew nothing about the Hero Himmel even up until his passing. However, following Himmel's funeral, she made the decision to get to know Humans better.
Although she is generally stoic, carefree, and often lacks tact, Frieren also has things she is emotionally sensitive to. She was embarrassed when others discovered her mana detection is interrupted for a fraction of a second when a spell is cast, a common error for apprentice mages that she hasn't been able to overcome. She is sensitive to people calling her old and held a grudge against Stark for doing so twice. When she is upset, she is capable of throwing a tantrum that can result in her crying for upwards of three days, scaring the other members of the Hero's Party. It also implied that she is somewhat insecure about her body, as she occasionally shows hints of jealousy over the size of Fern's bust, however Frieren was tying to find a spell to make her breasts bigger she thought she finally found one but instead of giving her big breasts this spell gave her a huge cock instead and she can't get rid of it but she has gotten used to it in fact she rather enjoyed having a futa cock.
