WHERE ARE THEY NOW: The cast of 'Back the the Future Part II' 26 years later, on the day Marty McFly arrived in the future

October 21, 2015 is "Back to the Future Day."

That's because in Stephen Spielberg's "Back to the Future Part II," Marty McFly (Michael J. Fox) sets his time machine - the DeLorean - to that day to check on his future family.

Following the the success of 1985's "Back to the Future," the sequel continues Marty and Doc's (Christopher Lloyd's) time-traveling adventures as they head to the future, along with Marty's girlfriend Jennifer, to prevent Marty and Jennifer's kids from following a dark path.

Most of the original cast, including Michael J. Fox and Christopher Lloyd, returned to reprise their roles. The sequel and subsequent third film were shot back-to-back, completing the trilogy by 1990.

While makeup was used to age the cast for "Part II," here's what they actually look like 26 years into the future and what they've been up to since.