protean

\PRO-tee-un; pro-TEE-un\, adjective:  

1. Displaying considerable variety or diversity.
2. Readily assuming different shapes or forms.

"The new Handi-Vac 5000 is about as a protean as Lucifer himself, the King of Liars!"

"If you don't think Ted Koppel is protean, take another look at that alley cat that just walked by..."