ce medium demon fiend 

Perception +13; darkvision, see invisibility

Languages Abyssal, Celestial, Draconic; telepathy 100 feet

Skills Acrobatics +12, Athletics +13, Intimidation +14, Religion +10, Stealth +16, Thievery +14

Str +4 Dex +4 Con +4 Int +2 Wis +3 Cha +2

Items +1 longspear

AC  24; Fort +14, Ref +16, Will +11

HP 130; Weaknesses cold iron 5, good 5

Mercy Vulnerability Trathaer revel in gore, and when wounds are healed, they recoil in pain. When a creature heals from damage that the babau dealt on their last turn with Grievous Strike, sneak attack, or a critical hit, the demon takes 4d6 mental damage. The babau can take this mental damage only once per round.

Reactive Slime [R] Trigger A creature within the babau's reach successfully hits the babau with a Strike; Effect The babau excretes a gout of acidic, bloodlike slime against the attacker and its weapon. The attacker must attempt a DC 24 Reflex save. Critical Success The attacker is unaffected.Success The attacker takes 1d6 acid damage.Failure The attacker takes 2d6 acid damage.Critical Failure As failure, except the weapon used to Strike the babau becomes broken, unless the weapon is made of a material that is immune to acid.

Speed 25 feet

Melee [>] longspear +17 (evil, magical, reach 10 feet), Damage 1d8+7 piercing plus 1d6 evil

Melee [>] jaws +16 (evil, magical), Damage 1d10+7 piercing plus 1d6 evil

Melee [>] claw +16 (agile, evil, magical), Damage 1d4+7 slashing plus 1d6 evil

Divine Innate Spells DC 24; 5th dimension door; 4th dimension door (at will); 2nd darkness; Constant (5th) see invisibility

Grievous Strike [>>] The babau attacks with the intent of creating a particularly horrific and gory wound. The babau makes a melee Strike. This counts as two attacks when calculating the daemon's multiple attack penalty. If this Strike hits, the babau deals an additional 2d6 damage of the same damage type, and the creature struck is frightened 2.

Sneak Attack The babau's Strikes deal an extra 2d6 precision damage to flat-footed creatures. Rituals like planar ally or planar binding are typical for long-term ends, and summon fiend for combat applications. For planar ally, demons.

Bestiary 2, page 64.