Walden is a minor Character in Kingdom Under Fire The Crusaders and in Heroes. He is a knight and leads spear-men. He seems jealous of Gerald however later on in the game he gives Gerald some good information. Gerald can also get information of off Walden by going to the gate sometimes after a mission where is would appear Walden hangs. Before the mission where you fight Regnier as Gerald, before you go to the castle, select the main gate and Walden will tell you some stuff about Regnier.
Walden dies after saving the king, this makes people think that he wasn't bad after all.