Legend (1985)

Revealing mistake: The two unicorns are a stallion and a mare in the movie. But both horses used were clearly stallions. This can be seen quite well when the "mare" is jumping around after she comes upon the stallion with his horn removed; a full shot of the male horse anatomy.

The Lord of Darkness: I require the solace of the shadows and the dark of the night. Sunshine is my destroyer.

Trivia: The unicorn voices were the sounds of humpback whales.

Question: What breed of horses were used for the unicorns?