That one person already used the other half of the auto-encoder to go from an image of "ugly Sonic" from the Sonic The Hedgehog movie, to a special "{sonic}" to

That one person already used the other half of the auto-encoder to go from an image of "ugly Sonic" from the Sonic The Hedgehog movie, to a special "{sonic}" token, and then they could put that into prompts. It is not far off.