Is Your Hair a Watermelon?

The opening credits highlight the symbols of elements from the periodic table when they appear in the actor's names. So I wrote a little bit of code back that can take any name or word indeed and tell you what elements are in it. Do you want to know what your options are? Oh, yeah. You got five. You can have hydrogen, classic, just the big H. Hydrogen. That's B-E or boron. Just brilliant. You are beryllium. The problem is basically which names do or don't have elements in them somewhere. Assuming that an actor's name must require an element symbol to be in it, who's the most popular actor who