Animator Ralph Bakshi is known for making "mature" or "adult" animated films--in the sense that his films deal with more mature themes, as opposed to the standard light-hearted children's fare that Walt Disney is known for. But Bakshi is also known for using a special animated technique known as roto-scope. This is where the animated film characters are drawn over film frames of actors. In order to make Fire And Ice, Bakshi literally directed actors on indoor and outdoor sets (which were mainly bare, save for a few props) just like it were a regular film.

Animators then received blown up frames of film, which are used as the foundation to draw the characters over the actors. They add the costume details and other details and then place the characters into the finished drawn scenes. This technique was famous for its smooth, flowing style that gave the characters a more realistic way of movement, and added to the overall "selling" of the story. Bakshi also used this technique on his other films, such as American Pop and the animated Lord Of The Rings.