This is a screenshot from The Adventures of Sonic the Hedgehog. Do you notice something? Sonic's head is detached from his body, proving that this show mildly used puppet animation before it was popularized in the mid-to-late 2000's. Puppet animation is a kind of animation that has characters with multiple assets as positions for faces and bodies to make the animation processes easier.
This is from a Sonic the Hedgehog PSA. You know which one.
