The Shapeshifting Creature is the main character in the Spin-Off/Tie-In of Romantically Apocalyptic. It is not human but it does have the ability to teraform an area (Radioactive grass or normal grass is unknown).
The creature has the ability to shapeshift into any form it appears to desire. It has shown that where ever it walks, it teraforms the area back into grassy areas. It is known that Cancer can kill it's teraforming.