Ira's theme is basically a metal version of Bloodborne's Cleric Beast. Not so much for the cleric themes of it but more of how heavy it is as well animalistic and even pained/tragic.
There is something very melodic and sad underneath the INTENSE hatred and anger the song conveys, which is fitting for both Bloodborne and for Ira who is my representation of Wrath. It also has heavy drums and bass which fits her well because her main weapons are her fists or her giant kanabo (Japanese spiked club).
Now while Ira is THE villain of my story, she is also the protagonist. By contrast, her main antagonist and thus technically the Hero is Eva, aka Seraph. Thus she has a more heroic theme:
Granted I would imagine this with violins instead.
They also have a theme for when the inevitably clash: