Bio Army Leader Doctor Bio (軍団 リーダードクターバイオ Baiogundan Rīdā Dokutaa Baio?, 1–21, 43): Formerly Spielban's father, Doctor Ben. Because of his great skills in biology he was captured by the Waller Empire and converted into the leader of Waller's Bio Army. He creates Biohumans and Battle-Lifeforms with Lifeform Modification Surgery. He was also protective of Helen and constantly watched over her like a father would. Bio can unleash vine-like appendages from his arms and wields a giant sword in battle. He even created a clone of himself once. In his first and only battle against Spielban he mutated and ended up in a Bioroid monster form, Bioroid Bio (ep 21, 30).