Mel Gibson made an unannounced stop at the “Mad Max: Fury Road” premiere in Hollywood on Thursday to the excitement of the film’s cast and producers.

The 59-year-old actor-director, who played Max Rockatansky in the 1979 Australian action film and two sequels, posed for photos on the red carpet with new “Mad Max” Tom Hardy and other cast members.

All four films in the “Mad Max” series (including the 1981 “Mad Max 2: Road Warrior” and “Mad Max Beyond Thunderdome”) were directed by George Miller, who chatted with Gibson at the premiere.

“Mad Max: Fury Road,” which opens May 15, is poised for an opening weekend of $40 million-plus.

The $150 million-plus tentpole, co-starring Charlize Theron, will play the Cannes Film Festival next weekend.