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.