The great disciples exist in the record as personalities, not types, and that is why they matter. Sariputta systematised the teaching and is credited by the Theravada with the Abhidhamma method. Moggallana had the psychic powers and was murdered by rivals — the tradition notes he saw it coming and did not evade it, karma being karma. Ananda served as attendant for twenty-five years, remembered everything, argued successfully for women's ordination, and was pointedly not yet awakened when the first council convened — the story has him getting there overnight, minutes before the doors opened. Mahakassapa, the austere one, convened that council and kept the rule.