Complex sentence: Malek became the Guardian of the Pillar of Conflict some time after Moebius and Mortanius successfully rose up against the Pillars'vampire guardians and acted in this capacity until his death at Vorador's hand in Dark Eden.
Split into simpler sentences: Malek became the Guardian of the Pillar of Conflict some time after Moebius and Mortanius successfully rose up against the Pillars'vampire guardians. He acted as the Guardioan of the pillars until his death at Vorador's hand in Dark Eden.