Bio World keeps making unique looking tees in 2019.
Here is their "Looming Eggman" tee. It's an all black tee with a CG design of green hill, large in the center. It is stamped out & through to create the designs & words. First, there's Sonic's name spelled out in Japanese (the checkered ground part) then, the main circle stamp has a line-art Eggman where he is 'looming' over the design. The Sonic is a fun choice too, it's the seldom used 'sarcastic-shrugging' pose. The white parts of his detail are filled in with blue so he doesn't dissappear into the colorful GHZ scene behind him.
This design clearly took some working up to be able to create, and there's no other tee that looks like it at all. It's a unique one! It is on Amazon for 21 dollars in adults sizes, but is it anywhere else?