Stoneface
Prerequisites
Skills: Bluff 3 Ranks, Profession (gambler) 3 ranks
Feats: Any two of the following Skill Focus (bluff), Skill Focus (Intimidate), Skill Focus (Knowledge [any]), Improved Feint, or Intimidating Prowess.
BA: Full
Good Saves: Ref, Will
Level...Ability
1st.......adamant, stoic mask
2nd.......aloof, stoic mask
3rd.......guiltless, banal strike, stoic mask
Adamant (Ex): +2 to Bluff and Intimidate, and the DC to use Sense Motive against a Stoneface increases by +2. If the stoneface has 10 or more ranks in these skills, the bonus increases to +4.
Stoic Mask (Ex): The stoneface adds his Charisma modifier to Will saves to resist divination. In addtion, at each stoneface level, the stoneface chooses on particular effect against which he becomes more reistant. The stoneface may add his Charisma modifier versus spells and ability types he has selected with stoic mask. Bonuses from stoic mask do not stack; if an effect would fall into more than one category, the stoneface uses the higher bonus. The stoneface may choose from the following effects:
-charm
-compulsion
-fear
-figments
-glamer
-phantasm
Aloof (Sp): A stoneface can cast glibness (caster level equals stoneface level) as a spell-like ability 3 times per day.
Guiltless (Sp): A stoneface acts as if under the constant effects of a misdirection spell.
Banal Strike (Ex): A stoneface is so skilled at hiding his intent, he can feint as a swift action while making an attack. A successful feint applies to the next attack the stoneface makes, as normal, not to the attack made while using this ability. There is no limit to the number of times the stoneface can use this ability, but once a creature has been affected by a stonface's banal strike, it is immune for 24 hours.
Plus some appropriate scoundrel-ish/tough guy/gambler/clint eastwood flavor to sell the whole "stoney demeanor" thing.