Harpoon has been trapped, alone, in an underground lake system for a very long time. Hordes of small constructs have stolen all his coins. He'd be glad to send some foolish humanoids to a watery grave. He has a collection of magic wands he'll use before rushing in to drown the weakest-looking humanoid in the water he can find -- bull rushing them in if necessary.
Harpoon CR 7
Male Black Dragon
CE Medium Dragon (Water)
Init +0, Senses Listen +16; Spot +16; Blindsense 60 ft.; Darkvision 120 ft.
Languages Draconic
AC 22, touch 11, flat-footed 22 (+12 natural)
hp 111 (13d12+27 HD)
Immune Acid, Magical sleep and paralysis effects
Fort +10, Ref +8, Will +8
Spd 60 ft., fly 150 ft. (poor), swim 60 ft.
Melee bite +16 (1d8+2), claws +15/+15 (1d8+1), and wings +15/+15 (1d6+1)
Base Atk +13; Grp +16
Space 5 ft.; Reach 5 ft.
Atk Options -
Special Actions breath weapon, use magic device
Abilities Str 17 (+3), Dex 10 (+0), Con 15 (+2), Int 10 (+0), Wis 11 (+0), Cha 10 (+0)
SQ water breathing, low-light vision
Feats Multiattack, Improved Natural Attack (claw), Improved Natural Attack (wings), Weapon Focus (claw), Weapon Focus (wings)
Skills Hide +16, Move Silently +16, Sense Motive +16, Swim +11, Use Magic Device +16
Breath Weapon (Su): 8d4 acid, 60 ft. line (Reflex DC 18/half)