Maxim Feller is a supporting character in the anime E's Otherwise. He is a male adolescent esper with purple hair and purple eyes, and his appearance is often described as striking and androgynous, with a somewhat alien or crossdressing aesthetic that sets him apart from other characters. He works for Eiji Sagimiya within the ASHURUM organization and is a member of the AESES special force. Maxim is introduced later in the series as a replacement for the protagonist Kai Kudou, brought in as part of experiments to enhance psychic abilities. His look is smoldering and sensual, reflecting his power and mystery. He possesses incredible esper abilities, which are a result of the experiments conducted on him. His motivations are tied to his loyalty to ASHURUM and his role in the organization's plans, though his personal goals are not deeply explored. In the story, he serves as a counterpart to Kai, representing the path of an esper fully subjugated to corporate control. His relationships are primarily professional, with limited interaction with other AESES members. His development is minimal, as he remains a relatively static figure defined by his power and his function as an experimental subject.