Halo 4 Master Chief and Cortana Guardian Lithograph Print 'Guardian' by Robogabo. Captivating art print from the Halo 4 video game. Lithograph features Cortana and Master Chief on the UNSC Forward Unto Dawn. Measures 20-inches wide x 16-inches tall. Limited edition of only 1,000 pieces! A limited edition of only 1,000 pieces, this Halo 4 Master Chief and Cortana Guardian Lithograph Print is a high-quality art print from the Halo 4 video game. Measuring 20-inches wide x 16-inches tall, it presents Master Chief with Cortana in the background on board the UNSC Forward Unto Dawn ship. 'Guardian' by artist Robogabo comes hand numbered and with a certificate of authenticity. As Master Chief and Cortana prepare to defend UNSC Forward Unto Dawn from invaders, she keeps a secret from him. Cortana has reached the end of her life and in the coming days she will cease to function. For years she has protected Master Chief, but now she must find the courage to ask him to save her.