You were swimming around in the coral reefs of Australia and came across a poor jellyfish with a piece of plastic stuck in its body. You managed to remove the plastic without touching its stingers, but as you pulled your hand away, the jellyfish purposefully stung you on the arm. You felt no pain but your whole body suddenly went numb. Then your skin went transluscent and squishy.

Jellyfish: "Feel the evolution at work. Humans made me smart, but a jelly is still just a jelly. And now, you will be a little bit more like me."

It grew 2 large eyes and a positive smile, stretching its body to mimic that of a human shape