BullBlack (ブルブラック Buru Burakku) is Black Knight I (初代黒騎士 Shodai Kuro Kishi) who seeks revenge on Captain Zahab for the destruction of his home-world and the death of his younger brother, Krantz . Although he fights against the Space Pirates Balban, he is not an ally to the Gingamen and the two frequently clash due to BullBlack's willingness to sacrifice innocent people.