Wait a minute, you’re not Sonic, this is impossible!
Well that looks like Sonic because those characters above were designed by Naoto Oshima, known as the original character designer of Sonic, Eggman, and others from Sonic 1, all the way to his departure from Sega to form Artoon (and its successor Arzest where he now resides) in 1999 after Sonic Adventure was released.
This is for a game called Terra Battle, which is by Mistwalker for mobile devices, created by Hironobu Sakaguchi, the creator of Final Fantasy. Arzest even contributed to the game earlier, credited for “Illustration and graphic design for monsters, scenery, etc”. Oshima contributed these guest character designs for a Daily Quest in the game as shown, which will start its rotation next Friday.
What I can’t help but wonder, is why these look so similar to Yuji Uekawa’s artwork, especially in the original Sonic Adventure. What do you folks think about this?