The Magitek Armor is a mechanical weapon employed in Final Fantasy VI by the Gestahlian Empire, which uses magic as energy thanks to the Empire's Magitek technology. Terra, the game's female protagonist, has her own Magitek Armor, and uses it to help her move faster, advance in difficult terrain or fight.
Magitek Armor is basically a steampunk mecha that works with magic, a novel concept that could be used in other games as well. We are used to seeing ultra-badass mechas with modern, futuristic designs. It would be great if we could see other kinds of mechs and robots with more ancient-looking or arcane design aesthetics.