Despite sharing familial ties with Tailto, Ethnia, Teeny and Linda, Hilda absolutely despises them all. This leads to her abusing them, causing Tailto/Ethnia to succumb to the mental torture they sustained. She also willingly supports the Child Hunts and hopes for Ishtar to wed Julius as soon as possible, all for her own selfish gains. She is thus said to not possess a soul, as her actions are both cruel and merciless. Hilda will ultimately be slain by Seliph's liberation army in the final few chapters of the game.
Hilda is fought twice, once in Chapter 10, and another in the Final Chapter. She is extremely powerful with a whopping attack power of 50. This is thankfully offset by the fact that Bolganone is a heavy tome, essentially lowering her attack speed by a significant amount.