Marc McClure

In a nod to his Superman feature film work, McClure appeared on the CW's Smallville. McClure appeared as Dax-Ur, a Kryptonian scientist who has been living on Earth for over 100 years. He also appeared in a cameo role as a prison security officer in the film Justice League in 2017.

McClure played Dave McFly, Marty McFly's older brother in the 1985 film Back to the Future, reuniting him with his I Wanna Hold Your Hand co-star Wendie Jo Sperber, and with writers Bob Gale and Robert Zemeckis, who wrote and directed that film, respectively. McClure reprised the role of Dave McFly in the sequels, Back to the Future Part II (though his only scene was not included in the theatrical version) and Back to the Future Part III.

McClure's best known role is as Jimmy Olsen in the 1978 film Superman, and its sequels, Superman II, Superman III, Superman IV: The Quest for Peace and in the 1984 spinoff film Supergirl. He is the only actor to appear in the same role in all four Christopher Reeve-era Superman films and Supergirl.

He was in the 1977 Brigham Young University church video The Phone Call as Scott, who works at Ripples Drive-In. In 1978 he appeared in the film I Wanna Hold Your Hand and in 1980 appeared in the film Used Cars, both of which were written by Robert Zemeckis and Bob Gale.

Marc A. McClure (born March 31, 1957 in San Mateo, California) is an American actor known for playing Jimmy Olsen in the Superman series of feature films released between 1978 and 1987 and Dave McFly, the older brother of Marty McFly, in the Back to the Future films.