tragicomedian
/ˌtradʒɪkəˈmiːdɪən/noun
An actor who performs in a tragicomedy; (also) a comedian whose performances contain serious or sombre elements; (occasionally also) a writer or composer of tragicomedies.
Origin
Early 17th century; earliest use found in Thomas Middleton (d. 1627), playwright. From tragi- + comedian, after tragicomedy.