from source:  
“
 
First from my Halloween Pony set.They’re all draw by me and will be only one of there kind.
 
They’re nocturnal pony.The creature who born from the power of eternal night in the night of Nightmare moon.
 
May be the dark mare created them because Luna loneliness still stuck deep in her corrupt mind.
 

 
:heart: Snail Trail :heart:
 
Once upon a time there was an Earth pony who is so lazy and so slow in doing anything.She love to sleep and stay in her home instead of running around in the light of day like any other pony do.
 
Then one day she find a small shell start growing on her back…slowly it keep getting bigger and bigger.In the end she don’t has to leave her house anymore.
 
Those antennae of her is actually her eye.They can look 360 around her and can pull back to look like normal pony eyes.
 
She has a soft slimy body that can fit thru any small hole but her shell is hard and solid.
 
She can withdraw all of of her body into the shell and that shell is also cover her cutie mark…you can consider it her cutie mark.
 
She has a sticky feet and can walk onto the wall.When she slowly walk around she will leave slimy trail behind her.” October 22, 2012