badukathonk - New Monster For labyrinth lord

Badukathonk

No Appearing: 1

Alignment: Neutral

Move: 60' (20')

Armour: Class: 9

Hit Dice: 2

Attacks: Explosion

Damage: 3D6

Save As: Fighter: 1

Morale: 3

Hoard Class: XX

XP: 30

Badukathonk's are an extremely strange magical mistake.  Born from an attempt to cross a monkey with a human, a wizard inadvertently spilled a bunch of "dark powder" into the mixture.  Since then these extremely random creatures have wandered world's wreaking havoc.  Badukathonk's have somehow figured out how to breed, but scholars believe that this is extremely rare.  They appear as a short four foot tall humanoid, purplish in color.  Their arms are extended more than the average human almost dragging on the ground.  They have a prehensile tail that they use to hang from ceilings.  The absolutely strange thing about Badukathonk's is that when they are frightened by any noise they will explode!  When they are encountered there is a 60% chance that they will blow up right away.  When engaged in combat they will blow up in 1D4 rounds of combat, causing immense destruction.  In a normal encounter they will blow up a 20 feet section of dungeon.  (20 feet deep, above and on all sides).  

EDIT:  The name is very similar to badonkadonk. 
it is the sound that it makes when it explodes -  badu ka thonk.