The following are the six Demon Legion Commanders:

1: Valtan Commander of the Demon Beast Legion: Male, raging-bull-like demon
2: Vykas Commander of the Covetous Legion: Female, alluring seductress-like demon
3: Kakul Saydon Commander of the Mayhem Legion: Male, crazy clown-like demon
4: Brelshaza Commander of the Phantom Legion: Female, mysterious lady-like demon
5: Akkan Commander of the Plague Legion: Male, toxic undead-like demon
6: Thaemine Commander of the Darkness Legion: Male, powerful knight-like demon

Give each of them two agents that work for them. Give each agent a movelist they use against the player to defeat him. Give each of them varying fighting styles.