Here is an uncommon plastic keychain. It was never common to have one of the little animals inside the robots solo on an item...but here goes Pecky the Penguin on a shaped flat plastic keychain. The edges/interior lines are raised, and likely the yellow/white areas were poured. A metal button attaches the key clip below the feet. This is suspected to be a UFO catcher prize. This likely means there were other little animals & Sonic at least, done in this same plastic style.