Dark Hero (also known as Warden of Hades as a boss and A-Virus Infected as a "generic" unit in Chapter 6) is Axel's class in Disgaea 4: A Promise Unforgotten. Obtain: Extra Stage 1, "Dark Show Opening", unlock by passing the "Attend the Dark Hero Live Show." The Dark Hero acts as a defensive variant of the Steward; with higher aptitudes in DEF and RES, while also sporting slightly higher base stats in ATK and SPD. The Dark Hero learns all Fist skills as well as Sword skills up to the 4th Tier.