Alexander

[Shady_Milkman]

I'm post-Godrick. Alexander still won't appear near Saintsbridge SOG, there's just a hole there. Did I miss him, or does he appear later?

[brownie689]

IRON FIST ALEXANDER LOCATION IN ELDEN RING
Iron Fist Alexander is found in multiple locations as the story progresses:

Alexander can be found in Northern Stormhill, West to the river and North of the Agheel Lake North Site of Grace. [Map Link]
He can next be found in Gael Tunnel.
This tunnel is in the border, between Caelid and Limgrave.
He can be found past a door, and once he is talked to he expresses his desire to move on to Redmane Castle. [Map Link]
If the Radahn Festival has been triggered, Alexander will disappear and appear at Redmane Castle.
Talk to him again at Redmane Castle, he will talk about his excitement about the incoming encounter with Radahn. [Map Link]
He can then be summoned for the boss fight against Starscourge Radahn.
If he has not been interacted with prior to this, he will show up at the festival anyway and introduce himself.
Before moving to his next location, he can be found scavenging at Starscourge Radahn's Site of Grace.
Here he must be talked to exhausting all dialogue to continue his questline. [Map Link]
Found in Liurnia of the Lakes, just south of Carian Study Hall.
Follow the path south from the Artist's Shack Site of Grace. Alexander will call out for help as the player gets closer to his location.
He will ask you to make him "slippery." Use an Oil Pot or Roped Oil Pot to free him.
This step can be skipped by going to Mt. Gelmir after the Radahn festival. [Map Link]
Found near the Seethewater Terminus Site of Grace at a lava lake south of Fort Laiedd in Mt. Gelmir.
Alexander is sitting in the lake behind a Magma Wyrm. Alexander can be spoken to from the safety of the rock in the lava lake.
Upon exhausting all of his dialogue, he will give the player the Jar. [Map Link]
Can be summoned for the boss fight against Fire Giant. His sign will appear only after entering the area through either chain. [Map Link]
Found in Crumbling Farum Azula.
From the Dragon Temple Lift grace (can be accessed by using two Stonesword Keys), go past the plaza full of undead up the flight of stairs, turn right and you'll see two square bracket shaped archways. Jump on the archway on the left (closest to the sleeping dragon) to get over to the other side. Alexander can be found directly on the flat arena after crossing the crumbling tower. [Map Link]
He will challenge you to a warrior's duel, and if you win, he will reward you with Alexander's Innards and Shard of Alexander.
If you lose, he will continue letting you challenge him until you win.

[brownie689]

Just follow this guide and you'll be good. Start with the first location and see if he's there. If he's not there, you can move on to the next spot. Check Gael Tunnel. He could be hanging out inside that place.