Yuji Naka on Twitter:
At that time, I could not write our real names in the games, so during Sonic 1, I made something that displays our real names with hidden command, but I decided on the display in the form of replacing the section of Sonic Team display, so even if we can see it, we can see it in a moment only, so when it can be made into a GIF animation, it is good to be able to see it many times, isn’t it?