Looking through the Mirror Mephit stats in Expedition to the Demonweb Pits and the descriptions of the True Seeing and Simulacrum spells, I think that the spell True Seeing actually would reveal a Simulacrum for what it is under normal circumstances.  The first two lines in the Simulacrum spell description are literally 'Simulacrum creates an illusory duplicate of any creature. The duplicate creature is partially real and formed from ice or snow.', and that ice or snow form is a material component of the spell.<br/><br/>At the same time, however, the Mirror Mephit gets Simulacrum 1/day as a spell-like ability, which means it ignores the usual material components of the spell.  Based on the description of one of the sample encounters for the monster, I believe the intent was that they can bring a creature's reflection to life and use said living reflection for a variety of mischievous purposes.  As a result, I think the best ruling on why Vholdran was fooled by the simulacrum should be that Grimjaw simply has a higher Disguise check than Vholdran's +21 Spot.<br/><br/>As for Methu, whether or not he'd be able to see through the illusion would then come down to whether the Simulacrum was wearing a Third Eye Conceal (120,000 gp) or an actual item of constant Mind Blank (136,000 gp) that took up the same slot.  The former wouldn't block True Seeing, being a little more limited in what it blocks, but the latter would.<br/><br/>And for the Astral Stalker code of honor, that actually is directly in the creature's description in the Monster Manual III:<br/><br/>'These able hunters prefer to stalk intelligent foes, and the<br/>pleasure they gain from hunting these creatures for sport<br/>makes them evil by the standards of any race. However,<br/>astral stalkers adhere to a short list of tenets that they refer<br/>to as the Rules of the Hunt: Once its quarry has knowingly<br/>eluded an astral stalker, it will never again hunt that creature;<br/>if hired to hunt a creature, the stalker will not hunt its<br/>employer for at least one year; and no astral stalker will ever<br/>hunt another astral stalker.<br/><br/>'Astral stalkers find that their prey provides better sport if<br/>it knows it is being hunted, so they often warn their quarry<br/>in some roundabout fashion before beginning the hunt.'<br/><br/>Though, if sending a Simulacrum after Torahime is Grimjaw's idea of providing her with a warning 'in some roundabout fashion', then I get the feeling his definition of 'knowingly eluding' him for the purposes of ending his hunt is going to require something similarly over-the-top.<br/><br/><br/>Edit: Also, Lockepick, I have been giving the matter of Methu's build a bit of thought while at work today.  Would you be open to the possibility of swapping out his Aura of Inebriation for a special attack that's both a little stronger and still thematically fitting for his build?  The first possible option that came to mind was spellcasting as a 12th-level Bard, which was worked out a little earlier in the OOC thread as also coming with 12th-level Bardic Music (Inspire Courage only).  Your Ability Focus (Aura of Inebriation) feat could then be swapped out for Practiced Spellcaster to get your caster level up to 16, or maybe for something like Doomspeak (http://www.realmshelps.net/charbuild/feat/Doomspeak) to get an alternate usage for Inspire Courage.