Generate an image in the style of RPG cards: It must have a character in the mid

Generate an image in the style of RPG cards: It must have a character in the middle doing some pose, the character will be a man and not muscled, more anime. Try to put clothes on him, looking like a warrior or assassin. this character needs to be white and it must have an KNIFE with him, if you can make him dirty with blood. If you can, design an human that looks like an natural killer cell The background of the you can create but must be related to immunology or hematology.