Where is"Aldia, Scholar of the First Sin"?

[Player Name]

I know he can be fought as a boss if killing Vendrik before Nashandra, but I was supposed to see him at the last primal (Freja) and the first bonfire in Undead Crypt. Haven't seen him at all. Also heard he was supposed to be at The Gulch primal bonfire, but sadly no Scholar.

[LunarFortune]

found this on the wiki, it might help:

He is first encountered in the final primal bonfire room that remains unlit. If all bonfires have been lit prior to downloading the patch, he will automatically appear in the Black Gulch primal bonfire room, after The Rotten.

Upon speaking to the player at the primal bonfire, Aldia will proceed to the first bonfire in the Undead Crypt.

After exhausting his dialogue in the Undead Crypt, Aldia can be found in the Dragon Shrine bonfire room, at a significantly reduced size compared to the first bonfire.

Finally, after completing the dialogue in Dragon Shrine, Aldia will appear as a boss in the Throne of Want in Drangleic Castle after killing Nashandra. It is required to kill Vendrick before he appears. The game can be completed without fighting Aldia here, if Vendrick isn't killed.