Complex sentence: He once played a fictional "evil" twin to Conrad ("Hank Bain ") in an episode of"SCTV ", as well as Arthur (Conrad Bain) 's twin brother Arnold on"Maude".
Split into simpler sentences: He once played a fictional "evil" twin to Conrad ("Hank Bain ") in an episode of"SCTV ". He also portrayed Arthur's (Conrad Bain) twin brother Arnold on"Maude".