Gold Lightan - Golden Warrior (1981)
Original title: 黄金戦士ゴールドライタン
Gold Lightan - Golden Warrior is a 1981 Japanese-language animation series. It stars Minoru Inaba, Kazuya Tatekabe and Saeko Shimazu.
Hiro finds what appears to be a broken lighter. However, it is actually Gold Lightan, who has fallen to Earth from the Robot Dimension. He stays in compact size until called upon to act as a valiant warrior to save Earth from alien invasion.