Critters III! Now also in 5e!

[Bhu]

Spectral Dire Ape
Huge Magical Beast
Hit Dice: 18d10+90 (189 hp)
Initiative: +5
Speed: 50 ft. (10 squares), Climb 30 ft.
Armor Class: 19 (-2 size, +1 Dex, +10 natural), touch 9, flat-footed 18
Base Attack/Grapple: +18/+36
Attack: Slam +26 melee (1d8+10) or Rock +17 ranged (2d8+10)
Full Attack: 2 Slams +26 melee (1d8+10) and 1 Bite +21 melee (1d6+5) or Rock +17 ranged (2d8+10)
Space/Reach: 15 ft./15 ft.
Special Attacks: Improved Grab, Constrict (2d8+10)
Special Qualities: Darkvision 60 ft., Low-light vision, Greater Invisibility
Saves: Fort +16, Ref +12, Will +7
Abilities: Str 31, Dex 12, Con 21, Int 5, Wis 12, Cha 5
Skills: Climb +18, Listen +8, Move Silently +8, Spot +8
Feats: Awesome Blow, Improved Bull Rush, Improved Initiative, Greater Multigrab, Multigrab, Power Attack, Spectral Skirmisher*
Environment: Warm forests
Organization: Solitary
Challenge Rating: 12
Treasure: Standard
Alignment: Always neutral
Advancement: 19-36 HD (Huge), 37-54 HD (Gargantuan)
Level Adjustment: --

* See Savage Species and PHB 2 for some Feats.

"I warned you not to go in there! I warned you! Now it's followed you back, and it'll get us all! Get off my land and don't come back you fools! Go spend what time you have left regretting what you've done."

Every so often there's a nasty mutation of sorts among the Spectral Apes. Or perhaps they just keep getting bigger with age. There are few recorded instances of s Spectral Dire Ape (possibly due to their invisibility), but slain specimens have been 20-30 feet tall.

Greater Invisibility (Su): This ability is constant, allowing the Spectral Dire Ape to remain Invisible even while attacking. It works like the spell Greater Invisibility, and lasts as long as the Spectral Dire Ape is alive (it becomes visible 1 minute after death). This ability is not subject to Invisibility Purge.

Improved Grab (Ex): If a Spectral Dire Ape hits with it's Slam attack it can make a Grapple Check as a Free Action without provoking an Attack of Opportunity. If successful it may Constrict the next round.

Constrict (Ex): The Spectral Ape does 2d8+10 with a successful Grapple check.

Skills: Spectral Dire Apes have a +8 Racial Bonus to Climb checks, and may always take 10 on a Climb check even if rushed or threatened.

Combat: Spectral Dire Apes go straight for the Grapple. Lock up with the victim and rip him to shreds. Usually one in each hand.