This is an Illustrious style lora for the character Ultron from Marvel Comics. Specifically the look of Ultron and the Ultron drones as shown in the Age of Ultron story arc, which came out in March of 2013.
A weight of 0.85 to 1.5 works well with this with most models with best results around or near 1 or 1.35 depending on the checkpoints used. Sampling Steps of 15 to 35 works well with most models, as does a CFG Scale of 3.5 to 7.5.
Prompts for this lora are ( Ultron Age of Ultron, muscular, robot, ).
Sometimes adding the prompts ( gold body, red eyes, ) can help get the correct look of the character from that comic arc.