Ralph Bakshi
Ralph Bakshi was an animation guy who relied heavily on rotoscoping for his character-models. So his animations are, like the original Prince of Persia games, heavily lifelike for their time (excepting Disney's, but Disney was generations ahead of the curve).
Bakshi did Wizards. He also did Fire and Ice based on Frank Frazetta characters. The animation was okay. The STORY was decidedly meh.
Bakshi also did an animated The Lord of the Rings, but only the first half - because that's where he revealed that his style was wholly unsuited for that style of story, and nobody wanted to front him the cash to continue.