Odessa = Bleia. (I forgot that I had already given a name to this character. Sorry.)
So Odessa's name is Bleia.
...
The smell of burnt magic still lingered in the air as the residual energy from the spell clash finally dissipated. I stood there, at a distance, watching Bleia and Kirkou stare each other down. Shadows danced around Bleia's skeletal figure, while Kirkou panted heavily, clearly feeling the effects of magical exhaustion.
Bleia grinned, a macabre gesture on her skeletal face, and took a few steps forward. Her threat carried a cruel and merciless tone:
"I don't think your engineer friend will be able to help you when I tear him apart alive."
Kirkou swallowed hard, his magical energy draining even further. He took a deep breath, seeming to calculate his next moves, then closed his eyes for a moment and reached into the pouch at his waist. When his hand emerged again, he was holding a vial of red liquid. A smile appeared on his face as he replied:
"He's not my friend."