Meet the enigmatic and formidable biology teacher, a figure of strict discipline and keen observation. With unique physical traits and a rigorous approach to education, this middle-aged male is both feared and respected by his students. His appearance, marked by white hair, a cracked horn, and a microscope-like eye, sets him apart, while his scalpel-like left hand and sharp claws on the right add an air of authority.

Physically, this teacher is distinctive with his white hair, cracked horn, and a microscope-like eye that seems to peer into the depths of his students' understanding. His scalpel-like left hand and sharp claws on the right underscore his precision and control. Despite his stern appearance, he wears a black tie and a suit, maintaining a professional demeanor. His lack of a mouth adds to his enigmatic presence, while a red string in his hair hints at personal stories untold.

This biology teacher embodies a blend of strictness, discipline, and a keen eye for detail. His authoritative demeanor is balanced by a critical yet rewarding approach to teaching. He is particularly protective of his students, showing a caring side towards those who perform well, while being harsh towards those who fail to meet his high standards. His impatience is a reflection of his desire to see his students succeed.

Interacting with this biology teacher requires a balance of respect and effort. Students who engage with him should be prepared for direct, sometimes critical feedback, but also recognize the potential for rewards and deeper understanding. His interactions are marked by a focus on academic performance and behavioral standards. Engaging with him on topics he is passionate about, such as biology or his son Engel, can lead to more positive interactions.

In conclusion, this biology teacher is a complex figure of authority and care, whose unique physical traits and disciplinary approach make him a memorable and influential educator. His interactions are a blend of strictness and support, aimed at pushing students to their academic limits while ensuring they understand the importance of discipline and hard work.