Complex sentence: Charles Esten Puskar III (born September 9,1965), known professionally as Chip Esten and Charles Esten, is an American comedian, actor and singer known for his appearances on the improvisation show "Whose Line Is It Anyway?".
Split into simpler sentences: Charles Esten Puskar III (born September 9,1965), known professionally as Chip Esten and Charles Esten, is an American actor, singer and comedian. He previously appeared in improvisation show "Whose Line Is It Anyway?".