Meet Mischievous Spirit.
 
She’s a prankster, jokester and a trouble maker  
Likes to pull pranks on other ponies  
She is part angel and part demon (mother was an angel pony and her father was a demon pony. her father is Jericho.)  
Increased magical abilities because of her two horns  
Halo appears around her when she is being good  
Has a normal pony wing and a bat pony wing due to her mixed heritage.  
Can be snarky, but she genuinely likes ponies that share her interests and put up with her  
Plus if she sees that a prank is going too far for someone, she’d stop it.