Before Callie met her Hero she spend her past life disguised a human. joining the Human army in godville and ranking her way to general.General. Callie wields a massive Buster sword Called Posephone. The true powers of this weapon have not been reveiled. Some say the sword has a soul of a person sealed inside it to give the blade its unatrual power
Her training regime with her Hero Jack consists of dangerous dungeons and perilous training excersises. The sucess of this training has made them both stronger in battle.