Oh no, sorry sorry I thought the topic refers to the most evil murderer, I didn't know what does the word "suave" mean.Now I checked, it's not the same.

Benedict is close to the top, but I give vote to Joe Devlin, he has a special personality.

um...um...yeah..i guess i would say alex...yup..i would. his attitude, his sleekness, and his manner where so smooth and definitely suave!
but you have to include the other jc...jack cassidy...but his was more of a smarmy suavness.

I vote for Dr. Ray Fleming.

If we're talking suave, then I'd have to say either Gene Barry or Patrick Mcgoohan in Identity Crisis.