Doraemon: Nobita and The Steel Troops (1986, Shin-Ei Animation)

Suneo is showing off his child-sized remote robot toy and hoping to do better, Nobita claims he had one that was bigger than a house like in cartoons and comics. He rushes home to ask Doraemon for help but ends up a big fight where Doraemon runs off into the north pole to "cool off". Nobita follows hoping to find Doraemon. Instead, he finds a...