#26 John de Lancie
Star Trek series: Star Trek: The Next Generation
Character name: Q
De Lancie made his debut appearance as Q in The Next Generation. After appearing in eight episodes of the Patrick Stewart-led series from 1987 to 1994, the actor reprised the role in one episode of Deep Space Nine, three episodes of Voyager, and an episode of Lower Decks. Q was a highly powerful entity from a race of godlike beings also known as the Q.
In 1995, a year after his The Next Generation stint ended, de Lancie landed the role of Janos Bartok in UPN’s sci-fi western drama Legend. He then went on to play Frank Simmons in Showtime/Sci-Fi’s Stargate SG-1 from 2001 to 2002 and Donald Margolis in AMC’s Breaking Bad from 2009 to 2010. He also provided the voice of Discord in Discovery Family’s My Little Pony: Friendship Is Magic from 2011 to 2019.