Scripts 哲人, 哲斗, 徹人, 徹登, 鉄人, etc.(Japanese Kanji)
From Japanese 哲 (tetsu) meaning "philosophy, clear" combined with 人 (to) meaning "person". Other kanji combinations are possible.A famous bearer is Tetsuto Yamada, a professional Japanese baseball player. He plays infielder for the Tokyo Yakult Swallows.