This is a Illustrious style lora for Mega Man X style backgrounds from Capcom Mega Man X 1 through 8 games.
A weight of 0.5 to 1.25 works well with this with most models with what looks best varying widely amongst the various models. Sampling Steps of 15 to 35 works well with most models, as does a CFG Scale of 5 to 7.
Prompts for this lora are ( MMXBackground, landscape, background, ). It should be noted to make sure to prompt what you want as a background. Otherwise leaving it blank will have the tendency to give very generic backgrounds that, in some cases, look more like simple wallpaper for a desktop. It also favors the color blue due to most backgrounds and stages either being blue or dark. Thus, if you want different colors, prompt accordingly.