Ed's original appearence was in the Lion King. He was a minion for Scar. He was one of Scar's most trusted hyenas at that. He attacked Simba and the rest along with Shenzi and Banzai. It was also shown that Ed and the others attacked meerkats in the Lion King 1 1/2 movie.
Ed is very wild and rowdy. He is no longer affiliated with Scar so he isn't as mean. He doesn't talk much, he mostly act dumber than he really is.