'You will bend the knee or be destroyed!' said Stannis Baratheon...or was it General Zod? You know, I think they may be related somehow! The 100% cotton Superman Keep Calm and Kneel Charcoal T-Shirt is a grey t-shirt featuring an image of General Zod's headshot and a popular catchphrase with Zod's own spin on things. Hey, as the British explained during World War 2 that it is important to keep calm. I think they left that kneeling part out though in the propaganda posters or else we would all be speaking German! Either way, the Superman Keep Calm and Kneel Charcoal T-Shirt is a great t-shirt for fans of Superman, General Zod, kneeling, and black jump suits.