Iron OX
Complete conquest mode as Scorpio.

Puff
Complete conquest mode as Azure Dragon.

Frost
Complete conquest mode as Venus.

Hornet
Complete conquest mode as Devil King.

Q-Ball
Complete conquest mode as Lady Butterfly.

Talon
Complete conquest mode as Red Minotaur.

Taking Down the Iron Ox
All u got 2 do 2 beat iron ox is save all ur special and use it when he is close. when u use ur special ur invincible so wail on him. u need 2 move around alot though to avoid getting hit. 1 attack from iron ox can shave off 1/4 of ur health. i beat him with Q-ball. Q-ball is good for just about any boss fight mainly because his special can kill just about anything in 1 hit. if ur person has a prime attack that can hit through walls, get him on the opposite side of the gate were u first see him, u know next 2 the door and use ur prime on him for some easy hits and to get more fury bar. lather rinse repeat.