An "anime guy with brown hair" refers to a male character in Japanese animation characterized by his distinctive russet locks. For instance, Shoto Todoroki from the popular series "My Hero Academia" exemplifies this trope.
Such characters hold significant relevance in anime as they often embody a diverse range of archetypes, from brooding and mysterious to warm and outgoing. They also appeal to a wide audience due to their relatable hair color, which is common among individuals in various cultures.