Meet Ruby.
 
Ruby is another demon pony, and the crush of Mischievous Spirit  
Has the bat pony ability to drink blood and get powered by it  
But she doesn’t want to feast on ponies unless they want it  
She works at late night clubs  
She’s a barmaid, and makes drinks for other customers  
Often adds blood to them if the customer is another bat pony  
Despite her taste for blood, she is actually a vegetarian  
Can be really flirty, and likes to tease the ponies at the bar  
But she is a good listen and tries her best to help others and make friends.