This material originates in a 3PP Source
Large Outsider (Chaotic, Demon, Evil, Extraplanar)
Hit Dice: 12d8+72 (126 hp)
Speed: 30 ft. (6 squares), fly 60 ft. (good)
AC: 26 (–1 size, +2 Dex, +15 natural), touch 11, flat-footed 24
Base Attack/Grapple: +12/+20
Attack: Claw +16 melee (1d6+4)
Full Attack: 6 claws +16 melee (1d6+4) and sting +13 melee (1d4+2 plus poison)
Space/Reach: 10 ft./5 ft.
Special Attacks: Drone, poison, spell-like abilities
Special Qualities: Damage reduction 10/good, darkvision 60 ft., demon traits, immunity to electricity and poison, resistance to acid 10, cold 10, and fire 10, scent
Saves: Fort +14, Ref +10, Will +7
Abilities: Str 18, Dex 14, Con 22, Int 8, Wis 8, Cha 6
Skills: Balance +19, Concentration +21, Jump +6, Listen +14, Search +14, Spot +14, Survival +14 (+16 following tracks), Tumble +17
Feats: Dodge, Flyby Attack, Mobility, Multiattack, Weapon Focus (claw)
Environment: The Abyss
Organization: Solitary or swarm (2–7)
Challenge Rating: 10
Alignment: Always chaotic evil
Advancement: 13–18 HD (Huge); 19–36 HD (Gargantuan)
Level Adjustment: —
Locust demons prefer attacking as a group, and they instinctively shy away from attacking when outnumbered. The creatures most often soften their enemies with their confounding wing drone, setting upon injured or confused prey in preference to engaging a healthy opponent. If battling land-bound opponents, locust demons prefer to remain in the air, attacking with spell-like abilities or swooping in for flyby attacks.
A locust demon’s natural weapons, as well as any weapons it wields, are treated as chaotic-aligned and evil-aligned for the purpose of overcoming damage reduction.
Drone (Su): Few who hear it ever forget the terrible drone of a locust demon in flight. If it wishes, a locust demon can vibrate its thin wings in a mesmerizing rhythm to cause confusion in those who hear the awful buzzing. When a locust demon uses its drone attack, all creatures (other than demons) within a 300-foot spread must succeed at a Will save (DC 14) or become confused (see DMG) for 2d6 rounds. This is a sonic, mind-affecting effect. If the save is successful, that creature cannot be affected again by that locust demon’s drone for one day. The save DC is Charisma-based.
Poison (Ex): Injury, Fortitude DC 22, initial and secondary damage 2d6 Con. The save DC is Constitution-based.
Spell-Like Abilities: Locust demons can use the following spell like abilities: At will—contagion (DC 12), enervation, gust of wind (DC 10), summon swarm. Caster level 12th. The save DCs are Charisma-based.