A white scar like mark may appear on his forehead.
edit:The reason tails has an x on his forehead is because of the sonic x that's needed.
Not sure if its because of anime but using these for the negative prompts helps greatly: EasyNegativeV2, worst quality, low quality, watermark, signature, simple background, bad anatomy, bad hands, deformed limbs, blurry, cropped, cross-eyed, extra arms, speech bubble, extra legs, extra limbs, bad proportions, poorly drawn hands, text, flat background,modern, recent, old, oldest, anime, graphic, text, painting, crayon, graphite, abstract, glitch, deformed, mutated, ugly, disfigured, long body, lowres, bad anatomy, bad hands, missing fingers, extra digits, fewer digits, cropped, very displeasing, , bad anatomy, sketch, jpeg artifacts, signature, watermark, username, simple background, conjoined, bad ai-generated
I have alot of loras so adding this info wasn't easy.
