Chapter 749: The Demon King of Tyranny, Alucard.
In a world with red skies and a great forest of red leaves, a gigantic tree lay on the horizon.
"… It looks like the fusion has been completed," Victor spoke as he looked at a humanoid-shaped shadow that was much fainter than usual.
"Finally... I'm where I should have been from the start."
"It's been a long time, hasn't it, Alter?"
"Indeed... A very long time."
In Victor's training in Hell, he managed to fuse 99% of his Progenitor Powers inside his body, but 1% remained unwilling to join for some reason. Because of that, Alter was still present in Victor's fight with Diablo.
But... That was no longer the case: as of today, Alter will fuse with Victor.