This is an Illustrious lora for Shadowseraphimon from the anime Digimon. A weight of 0.85 to 1.5 works well with this with most working on an average weight of 1 to 1.35. Sampling Steps of 25 to 35 works well with most models, as does a CFG Scale of 3 to 7 with most working at around 5.
The prompts for this lora are ( WargreymonX, Digimon, muscular, ).
I would also suggest using other prompts to help better guide the look. They are not built in prompts, but prompts like ( red hair, orange skin, mech armor, and mecha armor ).