To me the ghecko is a comical lizard (well c'mon look at its name for a start)
Now for a fearful sounding name i would suggest the "likkle" lizard that lives on the island of commodo.
I read a reprot somewhere of a wildlife photographer who went to the island to take some pics of this likkle lizard & after not hearing from him for 7 days a group of rescuers went looking for him & all they found was his hat,camera,glasses & his boots (with his feet still in them)
As i was saying if it is a lizard with a name to instill fear then its gotta be the commodo dragon (but some how commodo vail or dragon vail just ain't got the same ring as Newt vail
Well - most of my angling clothing from hat to boots is camo and I normally have a gun in the boat when I go (for snakes when I get out to answer nature's call) so does that make me "commando vail"? Way too damned old and fat to do the crawling-thru-the-woods thing or to leap from high places so maybe not. LOL