Elementary has the actor Rhys Ifans.
Elementary (TV series) . Other supporting roles include Jon Michael Hill as Detective Marcus Bell , Rhys Ifans as Sherlock 's brother , Mycroft Holmes , and John Noble as Sherlock 's father , Morland Holmes . Rhys Ifans ( [ r̥ɨːs ˈivans ] ; born Rhys Owain Evans ; 22 July 1967 ) is a Welsh actor and musician . Ifans also has a recurring role as Mycroft Holmes in the CBS series Elementary .