Netflix decided to mine our childhood memories for profit, and the result was Voltron: Legendary Defender . A group of Earth teenagers are chosen to become Paladins and control sweet lion mechs, and eventually learn to merge those mechs into an even greater mech: Voltron. They've been drafted to fight against Emperor Zarkon and the Galra Empire to *drum-roll* save the universe! (No pressure.) From Google: "Teenagers transported from Earth become pilots for robotic lions during an intergalactic war."