Natasha appeared near the battlefield just the moment Alex decided to take some assistance from the entity he was sharing his body with.
'That presence...' A shiver ran down her spine as she felt the vivid presence of her father surging from Alex.
The energy flowing out of the young boy was too familiar for her to be mistaken. Considering how Alex hasn't gone on a rampage, even though he was utilizing the power of her father, it signifies that Alex was utilizing that power of will.
'Was Azeroth saying the truth...has Father really merged with the human?' Despite her curiosity, she didn't interfere in the battle and watched it unfold.
....
The moment Allen sensed the essence of Curse radiating from the boy he knew he couldn't hold back.
The inhumane entity that has seen godly battles and has devoured thousands of immortals couldn't be suppressed while thinking of the consequences. Allen needs to unleash whatever he has in his arsenal.