A new work in progress based on the Fire Angel from "Ashy's Creature Codex" at Planewalker.com.
Angel, Fire
Medium Outsider (Angel, Extraplanar, Fire, Lawful)
Hit Dice: 12d8+48 (102 hp)
Initiative: +10
Speed: 50 ft. (10 squares), fly 100 ft. (good)
AC: 32 (+6 Dex, +16 natural), touch 16, flat-footed 26
Base Attack/Grapple: +12/+18
Attack: +2 flaming burst longsword +20 melee (1d8+8 plus stun) or slam +18 melee (1d8+11)
Full Attack: +2 flaming burst longsword +20/+15/+10 melee (1d8+8 plus stun) or slam +18 melee (1d8+11)
Space/Reach: 5 ft. / 5 ft.
Special Attacks: Spell-like abilities, stun
Special Qualities: Damage reduction 10/chaos, darkvision 60 ft., low-light vision, immunity to acid, cold, disease, fire-based effects, and petrification, protective aura, resistance to electricity 10, spell resistance 30, tongues, uncanny dodge, +8 on Fortitude saves against poison
Saves: Fort +14, Ref +14, Will +12
Abilities: Str 22 (+6), Dex 22 (+6), Con 18 (+4), Int 20 (+5), Wis 18 (+4), Cha 22 (+6)
Skills: Concentration +22, Craft or Knowledge (any three) +21, Diplomacy +21, Escape Artist +24, Hide +21, Intimidate +21, Listen +19, Move Silently +21, Sense Motive +20, Spot +19, Use Rope +16 (+18 with bindings)
Feats: Alertness, Cleave, Great Fortitude, Improved Initiative, Power Attack
Environment: Elemental Plane of Fire, Paraelemental Plane of Magma, or any warm land
Organization: Solitary
Challenge Rating: 16
Treasure: No coins; double goods; standard items
Alignment: Always lawful neutral
Advancement: 13-18 HD (Medium); 19-36 HD (Large)
Level Adjustment: +8
A fire angel is about 7 ½ feet tall and weighs about 250 pounds.
Fire angels speak Celestial, Draconic, Infernal, and Ignan, though they can speak with almost any creature because of their tongues ability.
Combat
A fire angel is not afraid to enter melee combat, but prefers to avoid combat when possible.
A fire angel's natural weapons, as well as any weapons it wields, are treated as law-aligned for the purpose of overcoming damage reduction.
Spell-like Abilities: At will – aid, continual flame, detect chaos, discern lies (DC 20), dispel evil (DC 21), dispel magic, holy aura (DC 24), holy smite (DC 20), holy word (DC 23), invisibility (self only), plane shift (DC 23), polymorph (self only), remove curse (DC 19), remove disease (DC 19), remove fear (DC 17). 7/day – cure light wounds (DC 17), see invisibility. 1/day – burning hands (DC 17), blade barrier (DC 22), fire seeds (DC 22), fire shield, flaming sphere (DC 18), heal (DC 22), produce flame, wall of fire. Caster level 12th. The save DCs are Charisma-based.
Protective Aura (Su): Against attacks made or effects created by chaotic creatures, this ability provides a +4 deflection bonus to AC and a +4 resistance bonus on saving throws to anyone within 20 ft. of the fire angel. Otherwise, it functions as a magic circle against chaos effect and a lesser globe of invulnerability, both with a radius of 20 ft. (caster level equals fire angel's HD). This aura can be dispelled, but the fire angel can create it again as a free action on its next turn. (The defensive benefits from the circle are not included in a fire angel's statistics block.)
Stun (Su): If a fire angel strikes an opponent twice in one round with its sword, that creature must succeed on a DC 22 Fortitude save or be stunned for 1d6 rounds. The save DC is Strength-based.
Tongues (Su): All fire angels can speak with any creature that has a language, as though using a tongues spell (caster level equal to fire angel's Hit Dice). This ability is always active.
Uncanny Dodge (Ex): A fire angel retains its Dexterity bonus to AC when flat-footed, and it cannot be flanked except by a rogue of at least 16th-level. It can flank characters with the uncanny dodge ability as if it were a 12th-level rogue.