玄铁是变形金刚中的人物，在领袖之证中是震荡波为完成威震天所给他的任务提炼塞伯坦核酸时与天豹和众多巨狰狞一起製造的史前巨狰狞複製品。

虽然玄铁的出场次数甚少，但他的贡献却不容忽视。

Darksteel is one easily amused Predacon. Whether it's surprising Autobots, whacking Skylynx over the head with a bone, or thinking about the gutting of other Cybertronians, you can bet that Darksteel's going to laugh it up. At least he can stop joking long enough to scrap some Autobots.

Darksteel was created, along with Skylynx, by Shockwave and Starscream, who were re-creating an old plan; Project Predacon. Darksteel revels in combat, particularly combat that ends with him standing victorious over a damaged Autobot. Darksteel appeared in Predacons Rising. Darksteel laughs a lot, is very easily amused, and often has a sick smile on his face. These traits make him a jovial Predacon.