All 3 of these shirts were made by Ikon Collectibles (same company as the mug above, apparently now branching out into clothing) Each shirt is a varying shade of gray from Tails (light) to Knuckles (dark charcoal). They all also use the neo-classic stock art "redraws" but then use 'faux wear / distressing' to a huge degree. It's so severe, that Knuckles loses the top of his head. They're also oddly SUPER expensive, at something like 40 dollars each...so the whole "its worn out and grungy" thing really doesn't work with the price.