Create a high-definition, 4K quality, Discord-compatible, RPG portrait of a cursed prison background featuring a dark grey, two-legged, two-armed, one-headed Decepticon mech robot. The robot is wearing long silver robes, holding a gun in one hand and a trumpet in the other, and is positioned next to a Lamborghini Countach. Restore the colors to their original vibrant state. The image should be rendered in a realistic style with crisp, clear lines and uncompressed PNG format. Incorporate the themes of Octane and Redshift, conveying an uplifting atmosphere.hq,hd