Festergog (Vomit Fiend)

Festergog (vomit fiend): CR 9; Huge outsider; HD 12d8+60; hp 114; Mas 20; Init -2; Spd 20 ft., climb 20 ft.; Defense 22, touch 6, flat-footed 22 (-2 size, -2 Dex, +16 natural); BAB +16; Grap +33; Atk +23 melee (2d6+13, slam); Full Atk +23/+18/+13/+8 melee (2d6+9, slam), or +12/+7/+2/-3 ranged; FS 15 ft. by 15 ft.; Reach 10 ft.; SQ stench, immune to electricity and poison, acid and fire resistance 20, damage reduction 10/slashing, telepathy, darkvision 60 ft.; AL evil, chaos; SV Fort +15, Ref +8, Will +14; AP 0; Rep +0; Str 28, Dex 6, Con 20, Int 16, Wis 15, Cha 16.
Skills: Bluff +15, Climb +29, Intimidate +15, Knowledge (any three) +15, Listen +14, Read/Write Abyssal, Read/Write Draconic, Read/Write English, Read/Write Latin, Search +15, Sense Motive +14, Speak Abyssal, Speak Draconic, Speak English, Speak Latin, Spot +14, Survival +14.
Feats: Blind-Fight, Frightful Presence, Iron Will, Power Attack, Simple Weapons Proficiency.
Stench (Ex): A festergog's skin exudes a toxic, foul-smelling pus. Any creature within 10 feet must succeed on a Fortitude save (DC 21) or become nauseated for as long as it remains in the affected area and for 1d4 rounds afterward. A nauseated creature cannot attack, cast spells, use spell-like abilities, or do anything else requiring attention or concentration. The only action a nauseated creature can take is a single move action per turn. Creatures that successfully save are unaffected and cannot be affected again by the same festergog's stench for 24 hours.
Immunities (Ex): A festergog is immune to electricity and poison.
Acid and Fire Resistance 20 (Ex): A festergog ignores the first 20 points of damage from any attack that deals acid or fire damage.
Damage Reduction 10/Slashing (Su): A festergog ignores the first 10 points of damage dealt by any nonslashing weapon.