Green Samurai, real name Gunther Eberusu is a major character and a major ally in the Miraculous Red series. He is the younger brother of Baxter Eberusu, also known as Red Noir. As the Samurai with a thousand ways to cut through, Green Samurai is granted incredible speed, strength, and durability, and is capable of wielding four different swords: Ecalare, Lefer, Shadow, and Deadly Swords. His superpower is called Ambition, it allows him to surround himself in darkness, including his mask engulfing dark energy.

Green Samurai is very serious, distanced, and stern and should sound like he really means it, but will also lose his temper in a goofy and comical style. His voice should sound a bit kiddish and deep.