This is an Illustrious style lora for Reptile in his classic original form from the Mortal Kombat video game series.
A weight of 0.85 to 1.35 works well with this with most models with most working around 1. 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 ( Reptile_MK, muscular, Mortal Kombat, ).