Oozes

One of many slime/jelly type horrors you have encountered, the oozes are among the most perilous. Highly corrosive to metal (as well as, of course, flesh), oozes appear to be appear to be sentient and use their excellent camouflage to attack by surprise. 

Grey Ooze

HD: 3+3   AC: 8  Thaco: 17  Movement: 1

Attack: quickly corrodes metal (1-4 rounds, depending on thickness)

Contact causes 2-16 DAM

The one you came across was particularly cunning, having concealed itself on the ceiling of a cave chamber and tried to drop on a party member who passed beneath. Luckily it missed. The grey ooze resembles wet stone or cave wall sediment, making it very difficult to detect (+4 stealth in stone/cave settings).

 

Aquatic Ooze

HD: 3+1   AC: 8  Thaco: 17  Movement: 1 on land, 2 in calm water

Attack: quickly corrodes metal (2-5 rounds, depending on thickness)

Contact causes 3-14 DAM

 Only slightly less powerful than the grey ooze, the aquatic ooze lives in pools and other stagnant water features, which makes it virtually undetectable by sight (+4 stealth in water).