A. Kathrine has as many bodies as she wants, all of them as real as the others.
B. Kathrine is half-missing, with many empty patches on her body, and several gaps in her form.
C. Kathrine's image is displaced, meaning that she isn't there, but close-by.
D. Kathrine is covered in plates that constantly shift, meaning she doesn't ever have a consistent appearance for long.
E. Kathrine can change what parts of her are Arceus and what parts of her are human around as long as she maintains the ratio.
F. Kathrine appears as a gap in reality.
G. Kathrine is made of thousands of small pieces of armor, providing a layered effect.
H. Kathrine was melded to another subject during the Merge. They now have a joint memory and thoughts, while maintaining their individuality. They are both Arceus Merges, and both can control the other's body. What happens to one happens to the other, like status or wounds.
I. Kathrine is now a robot.
J. Kathrine warps 10 feet away every 5 seconds.
K. Kathrine is composed of several tiny Kathrines.
I'm presently thinking of more.