This is called the "Let's Roll" mug.
Appropriately named after its slogan, that appears in a ribbon shape at the bottom. It's a pretty classy mug in all black ceramic with a bright blue line art design. It has modern/new pose art for Sonic Tails & Kncukles. Below each is a ribbon with their name written in Japanese. The background (in a frame) is checkered & sky. This is a SegaShop item and should be 14.95 (if it comes in a box is unknown)