Party Foul

Element of Disharmony: anger 

Was created as a physical vessel for the element of anger when the tree of disharmony fully bloomed. 

Due to a joke being taken too far by Discord, she is technically his adopted daughter, even if he "adopted" her when she was an adult. Apparently he ACTUALLY submitted the paperwork in his wacky chaotic joke of him being her father with her being a part dragoneqqus  (other half is apparently unicorn, as she uses magic in her horns like one) 

Not always angry. She does have a short fuse, but anger isnt all she's about.  Parties and laughter always irritate her (sensitive ears and introverted) so she naturally avoids pinkie. Especially since they're harmonic opposites