Just tracked this mob today for the achievement (I know I'm years late), but he spawned for me at the top of the pyramid at the far right as you look at the ramp.
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Bilderov Naturalwonders Level 120 Druid Bristlebane (Formerly of Tribunal) Birthdate: Sunday, February 27th 2000 02:22:38
If you face the entrance ramp to Cazic-Thule, this guy spawns at the top of the Temple/Pyramid to your FAR right (B on map below). His placeholders can be any of the Tae Ew mobs.
Just camped this guy for 12 hours trying to get the boots. All five times he appeared he dropped the Lizard Blood Potion, never dropped the boots. Took about seven hours to get it to spawn the first time, then he spawned three times in a row, would guess from that it has a completely random spawn-time and drops the cazic gate potion as it's common.
thanks for them map its a big help, never been to Feerrot glad I have this little piece of evidence to help me find my way easier, <types in EQatlas.com> oops hehe forgot about that sit, thanks anyway man
See the Bestiary entry for Tae Ew Crusaders. But basically, they can spawn anywhere on the ramp to Cazic-Thule or on any of the Pyramid/Temples OR at the Obelisk with Radiant. They never spawn as wandering mobs.