Okay, here's a rough draft of the "Questioner".
Medium Outsider (Extraplanar)
Hit Dice: 10d8+50 (95 hp)
Initiative: +5
Speed: 30 ft. (6 squares), fly 50 ft. (good)
Armor Class: 22 (+3 Dex, +9 natural), touch 13, flat-footed 19
Base Attack/Grapple: +10/+12
Attack: Claw +12 melee (1d6+2 plus disease)
Full Attack: 2 claws +12 melee (1d6+2 plus disease) and bite +10 melee (2d6+1 plus poison) and 2 talons +10 melee (1d6+1 plus disease)
Space/Reach: 5 ft./5 ft.
Special Attacks: Disease, poison, spell-like abilities, true seeing
Special Qualities: Damage reduction 10/good, darkvision 60 ft., immunity to electricity and poison, resistance to acid 10, cold 10, and fire 10, scrying, spell resistance 17, telepathy 100 ft.
Saves: Fort +12, Ref +10, Will +12
Abilities: Str 15, Dex 17, Con 21, Int 18, Wis 20, Cha 16
Skills: 12 skills at 13 ranks
Feats: Multiattack plus 3 others
Environment: ?
Organization: Solitary?
Challenge Rating: 9?
Treasure: Standard?
Alignment: Always neutral?
Advancement: 11-14 HD (Medium); 15-30 HD (Large)
Level Adjustment: —
Combat
Disease (Ex): ?
Poison (Ex): Fort save or unconsciousness for X hours?
Scrying (Su): This ability is similar to a scry spell (caster level 14th) except the scrying lasts as long as the [Whatever they're called] continues to concentrates on it, and the [Whatever they're called] may use any detect spell or the message spell through the scrying sensor with no chance of failure.
Spell-Like Abilities: At will—detect thoughts, mirror image, telekinesis (DC 18), greater teleport (self plus 50 pounds of objects only); 1/day—heroism. Caster level 12th. The save DCs are Charisma-based.
True Seeing (Su): A [Whatever they're called] has continuous true seeing as the spell (caster level 14th). If this true seeing is dispelled the [Whatever they're called] can restart it on its next round as a free action.
Skills: [Whatever they're called] have a +8 racial bonus on Listen and Spot checks.