Variable Fighter 25A Art.jpg|Various Variable Fighters from the Macross Timeline. Wikia-Visualization-Main.png|Various Variable Fighters from the Macross Timeline. Variable Fighters (可変戦闘機 Kahen Sentōki?, ヴァリアブル・ファイター Vuariaburu Faitā) are a type of mecha introduced in the Super Dimension Fortress Macross television series and feature in all works of the Macross Timeline. They are transforming mecha that were originally developed by humans using using OverTechnology obtained from ASS-1.