As much as I love my ponysona being a Pegasus, I have debated this with myself and I came to realize that my ponysona being a Kirin is way more fitting. Reasons:
 
-Like Kirins having a dark side (Nirik) they get when angry, I’m also a very different person when I’m terribly mad.  
-Kirins had this lake in which they got silent when they submerged in it. I’m a very silent person irl, so it fits.
 
Stellar, despite being released from the silence spell, refuses to speak or socialize with others. When she does speak, she stutters and has a voice that can go from deep (as much as a female voice can be) to childish and pitchy. She doesn’t hate her voice, but she prefers not to use it. Her hobbies include drawing, crafting stuff, and listening to music.
 
I also based that cowlick coming out from her bangs on Wei Wuxian’s.