Revealing mistake: When they are at the Nutmar camp in the mountains, Val Kilmer tells Willow "Get on that shield!" but when they go over a 6, 7, 8 foot drop when they are sledding down the snow, you can clearly see runners on the shield.
Continuity mistake: When General Kael takes the baby to Nockmaar Castle, it has an extra 'turret' on the left-hand side, which has disappeared when Willow and Fin Raziel face the castle later on. (01:31:40 - 01:41:15)
Revealing mistake: In the scene when Madmartigan (dressed as a woman) and Willow are being chased in the cart, they jump over a log laying across the road. One of the horse's feet lands on the log, and it squishes, like it was a hollow rubber or plastic log.
Revealing mistake: When Madmartigan and Willow are about to crash against a rock and when they're speeding downhill, Mad's been replaced by an obvious stunt holding an ugly doll. (01:15:19)
Continuity mistake: After Fin is almost killed, Bavmorda and Willow talk, the way the blanket folds over his hand and the amount of loose blanket on the right differs noticeably between shots. (01:56:53)
Revealing mistake: After Madmartigan falls off the sliding shield, brown haired Willow is replaced by a stunt with black hair.
Continuity mistake: When Madmartigan kills the troll, the entrance to the castle changes style and the torch on the right disappears.
Continuity mistake: When Madmartigan kicks the troll he disappears from the ledge.
Continuity mistake: When Fin Raziel enters Madmardigan and Willow's cage, marks on the snow inside suddenly appear between shots.
Continuity mistake: Before Airk is killed, Madmartigan stares at the fight with his hair soaking wet and messed up. When he runs to talk to Airk, ten seconds later, his hair is nicely brushed backwards. (01:52:24)
Continuity mistake: When Fin gives Willow the book of magic, the people around rearrange themselves and come much closer together when the shot changes.
Continuity mistake: When Willow burns a troll and it transforms into a blob of raw-sticky-flesh with two heads sticking out, he kicks it and in a mere frame it becomes a brownish ball that looks like a roasted turkey.
Continuity mistake: When Bavmorda lies on the floor after being spun around by Fin Raziel, her right arm changes position 3 times between shots.
Continuity mistake: When Willow jumps on the shield it's clean. When Madmartigan jumps on it's covered with snow. It's not snowing at all, and even if there was a mild snowfall, it couldn't have covered the shield so fast.
Continuity mistake: When Willow jumps on the shield, the snow on Mad's back disappears between shots.
