When Doc Emmett Brown invents time travel inBack to the Future, he’s initially overjoyed at this enormous achievement. Yet he soon regrets his actions as time travel interferes with both the past and the future. At one point in the original movie’s second sequel,Back to the Future Part III, Doc Brown explicitly expresses his wish to the trilogy’s hero Marty McFly that his DeLorean time machine be destroyed. The moment that Marty arrives back in 1985 at the end of the third movie, he jumps out of the DeLorean as it’s hit by a train.

“Well Doc,” Marty says. “It’s destroyed, just like you wanted.” Yet there’s still time for one more act of time travel, as the Doc goes back on his word to visit Marty and Jennifer 100 years in the future. This finaltimeline change in theBack to the Futuremoviesgoes against Doc Brown’s sentiments throughout the trilogy about the dangers of time travel. Like many inventors, he comes to rue unleashing forces beyond his control. Nevertheless,the Doc continues time-traveling in the animated TV seriesspun off fromBack to the Future’s movie franchise, again failing to heed his own misgivings.

Back to the Future (1985) Movie Poster

Doc Brown Changes His Mind About Time Travel In Back To The Future 3’s Ending

He Regrets His Invention Throughout The Trilogy Until This Moment

If the events ofBack to the FutureandBack to the Future Part IIdidn’t make up his mind for him, then the story ofBack to the Future Part III,set 15 years before the 20th centuryhad even begun, demonstrates to Doc Brown once and for all that time is not to be meddled with. Not only does the Doc want the DeLorean destroyed once it’s returned Marty McFly to 1985, but he decides against going back to the future himself, preferring to stay in 1885, where he’s fallen in love with Clara Clayton.

Back in 1985,Marty assumes he’s never going to see the Doc again, until, in one final twist, his time-traveling mentor shows up in a locomotive time machine with Clara and their two sons, Jules and Verne. He explains that he’s changed his mind about the potential effects of time travel on the future, telling Marty’s girlfriend, Jennifer, “Your future hasn’t been written yet – no one’s has.Your future is whatever you make it.”

Having started a family in a time period decades before he was actually born,Doc Brown is apparently no longer concerned about the dangers of time travel. It’s for this reason that he decides to build a new time machine out of a steam train and go back to 1985 once more.

Back To The Future’s Animated Series Confirmed Doc Brown & Marty McFy Kept Time Traveling

They Go Back To Various Time Periods Across History In A Restored Version Of The DeLorean

Back to the Future Part IIIisn’t the end of Doc Brown’s time travelingwith Marty McFly, either. Indeed, the animated spin-off showBack to the Futuresees Doc Brown travel back to the Middle Ages and even Ancient Egypt with his family, while he takes Marty along with him to Ancient Rome and Latin America in the 16th century. The show’s exploration of various historic periods seems toexplain the last line ofBack to the Future 3, in which the Doc tells Marty he’s not traveling to the future again as he’s “already been”.

Given that this TV series features the Doc’s children, it comes afterBack to the Future 3in the chronology of the franchise. The show confirms that Doc Brown and Marty McFly have continued their adventures through time even after the DeLorean’s destruction in the final moments ofBack to the Future Part III. In fact,the DeLorean’s appearance in the first episode of the show suggests that the Doc has rebuilt it.

Back To The Future 3’s Train Is So Cool, You Can Almost Forgive How It Hurts Doc Brown’s Arc

This Time-Traveling Locomotive Is Cinema’s Ultimate Steampunk Machine

Doc Brown’s reappearance via his steam-train time machine at theend ofBack to the Future 3betrays his characterarc, which seemed to have ended perfectly with him retiring from time travel to stay with Clara. The Doc’s decision to remain in 1885 is the culmination of his misgivings about time travel and his regret at having invented it.

The DeLorean is also the only time machine in the movies up to the moment of its destruction, which brings a sense of finality to the story. TheDoc suddenly arriving in the future again via another machine goes against everythingthat’s come before it, detracting from his growth as a character and the DeLorean’s status amongscience fiction cinema’s best flying cars. On the other hand, it’s hard to begrudge Bob Gale and Robert Zemeckis, the storytellers behind theBack to the Futuremovies, ending their trilogy in this manner, because the Doc’s locomotive time machine is just so cool.

The vehicle combines the body and coal-fired engine of a 19th-century steam train with wings, a nuclear reactor, and a retro version ofBack to the Future’s legendary flux capacitor, in one of the most creative examples of the steampunk aesthetic ever rendered on the big screen. Doc Brown may have ditched his locomotive in the animated series, but it still gives the originalBack to the Futuretrilogy the big finish it deserves.