I had a gray slaad as a villain (of sorts) in my Planescape campaign. He was a merchant / land baron in Sigil, and disguised as an elderly, obese human. (Most of his associates knew what he was, but the body was an affectation.) He took an intellectual approach to chaos, enjoying seeing the way business proceedings played out and creating his own ripples.
I wouldn't advise using slaadi generally in this way, but I thought it worked in context to show the strangeness of the situation. (Plus, when a PC tried to assassinate the 'elderly, obese human,' she was in for a surprise when her mace just glanced off his skull.)
I wouldn't advise using slaadi generally in this way, but I thought it worked in context to show the strangeness of the situation. (Plus, when a PC tried to assassinate the 'elderly, obese human,' she was in for a surprise when her mace just glanced off his skull.)