Adult Infernal Dragon CR 16

XP 76,800
LE Huge dragon (evil, extraplanar, lawful)
Init +3; Senses dragon senses; Perception +28
Aura frightful presence (180 ft., DC 25)

DEFENSE

AC 31, touch 7, flat-footed 31 (–1 Dex, +24 natural, –2 size)
hp 250 (20d12+120)
Fort +18, Ref +11, Will +19; +6 vs. divination
Defensive Abilities inscrutable; DR 5/chaotic; Immune fire, hellfire, mind-affecting effects, paralysis, sleep; SR 27

OFFENSE

Speed 60 ft., fly 200 ft. (poor)
Melee bite +29 (2d8+15/19–20), 2 claws +29 (2d6+10/19–20), tail slap +23 (2d6+15), 2 wings +23 (1d8+5)
Space 15 ft.; Reach 10 ft. (15 ft. with bite)
Special Attacks breath weapon (100-ft. line, 12d10 hellfire damage, Reflex DC 26 half), commanding voice, crush, oppressive heat
Oracle Spells Known (CL 7th; concentration +12)

3rd (5)—blindness/deafness (DC 18), vision of hell (DC 19)
2nd (7)—cure moderate wounds, darkness, hold person (DC 17)
1st (8)—bane (DC 16), command (DC 18), forbid action (DC 18), sanctuary (DC 16), shield of faith
0 (at will)—bleed (DC 15), detect magic, guidance, mending, read magic, resistance, spark (DC 15)

STATISTICS

Str 31, Dex 8, Con 23, Int 24, Wis 21, Cha 20
Base Atk +20; CMB +32; CMD 41 (45 vs. trip)
Feats Bleeding Critical, Combat Expertise, Critical Focus, Improved Critical (bite, claw), Improved Initiative, Iron Will, Power Attack, Weapon Focus (bite, claw)
Skills Appraise +30, Bluff +28, Diplomacy +28, Fly +14, Intimidate +28, Knowledge (history, local, nobility, planes) +30, Linguistics +30, Perception +28, Sense Motive +28, Spellcraft +30
Languages Common, Draconic, Infernal, plus any 20 others
SQ planar infusion (180 ft.)

ECOLOGY

Environment any (Hell)
Organization solitary
Treasure triple

Infernal dragons delight in recruiting large entourages of overly ambitious mortals who gladly debase themselves in exchange for influence.