He sees threw IvU and does have a huge Wander range. A group member said he was IvU and the mob seen threw it, didn't beleive him so I tested it and he does, we took him down so we could get to our camps and such.
After the 9-12-07 patch he was up but he was wandering a path involving the rooms on BOTH sides of the front circle room as well as down the middle section. Like a proper commander of the guards, he wanders the various rooms evidently checking on his men. He covers EVERY room outside the shades part of FC. Has the biggest wandering range of any mob I've ever seen in FC.
Also drops Silver Ring of Numbing Cold: Magic, Lore, No Trade Fingers Ac 20 Str 16, Sta 16, Cha 16, Wis 16, INt 16, AGI 16 HP 265, Mana 255, Endurance 255 Recommended level 75, Required level 73 Wt 0.7, Size Small Class: WAR PAL SHD BRD Race: ALL Slot 1, type 7
This guy spawned as a roamer near zone in. Not much more difficult than the other mobs in Frostcrypt. Looked to be hitting harder, but I wasn't tanking. Dropped Ring and Translucent Powersource.
Drops A Large Softly Glowing Powersource and Giant Blood. Doesn't call for help from other undead (meaning single even if surrounded by mobs). I didn't see any ramp/flurry but might've missed it.