Dragon, Red Wyrm (CR 23)
AC: 42 (-4 size, +36 natural), touch 6, flat-footed 42
Hit Dice: 37d12+370 (610 hp); DR: 20/magic
Fort +30, Ref +20, Will +27
Speed: 40 ft., fly 200 ft. (clumsy)
Space: 20 ft./15 ft. (20 ft. with bite)
Base Attack +37; Grapple +64
Attack: 1 Bite +48, 2 claws +43, 2 wings +43, 1 Tail Slap +43, 1 crush +43, 1 Tail sweep +43 melee; Breath +48 ranged
Damage: 1 bite 4d8+15, 2 claws 4d6+7, 2 wings 2d8+7, 1 tail slap 4d6+22, 1 crush 4d8+22, 1 tail sweep 2d8+22, Breath weapon 22d10 (38)
Special Attacks/Actions: Breath weapon, fear (DC 35), SR 30
Abilities: Str 41, Dex 10, Con 31, Int 24, Wis 25, Cha 24
Special Qualities: Fire subtype, Locate object, Suggestion, Find the path, CL 17th, Can also cast cleric spells and those from the Chaos, Evil, and Fire domains as arcane spells
Feats: #Feats: 13
Skills: Skill points: 265 and plus Jump 37
Advancement: 38-39 HD (Gargantuan)
Climate/Terrain: Temperate and warm hill, mountains, and underground
Organization: Solitary, pair, or family (1-2 and 2-5 offspring)
Treasure/Possessions: Double Standard
Breath Weapon (Su): A red dragon has one type of breath weapon, a cone of fire (22d10 damage, Reflex save for half damage DC 38). Using a breath weapon is a standard action. Once a dragon breathes, it can't breathe again until 1d4 rounds later. If the dragon has more than one type of breath weapon, it still can breathe only once every 1d4 rounds. A blast from a breath weapon always starts at the dragon's mouth and extends in a direction of the dragon's choice.
Fire Subtype (Ex): Fire immunity, double damage from cold except on a successful save.
Locate Object (Sp): The dragon can use this ability as the spell of the same name, 11 times per day.
A creature with the fire subtype has immunity to fire. It has vulnerability to cold, which means it takes half again as much (+50%) damage as normal from cold, regardless of whether a saving throw is allowed, or if the save is a success or failure.