Over the years, we've seen a variety of Mystikal 's mug shots, but one flew under the radar ... and now we've got our hands on it, and we think it's a perfect time to trot it out after the rapper recently pleaded guilty to rape. Check out this never-before-seen 2010 photo of Mystikal -- real name Michael Tyler -- snapped by the Ascension Parish Sheriff's Office in Louisiana. In the pic, Mystikal looks clean-shaven and baby-faced ... unlike his gritty appearance these days. A rep for the sheriff'