Johan Halldén voiced the young Ebenezer Scrooge in Mupparnas Julsaga, the Swedish version of The Muppet Christmas Carol, and dubbed singing voices in the second version of Sesam. He also voiced Patrick in The Indian in the Cupboard, which was directed by Frank Oz and used an animatronic rat created by Jim Henson's Creature Shop.

Other voice credits include Disney's The Lion King (young Simba), Toy Story (Sid Phillips), the new Swedish dub of Pinocchio (Pinocchio) and many others.