Killing 2 birds with 1 stone! I like Surprise and wanted to include that rogue Pinkie from the Mirror Pool episode, so Surprise! was born!
Surprise’s entire appearance was changed with Discord’s chaos magic and some wild changeling magic, she really wanted to differentiate herself from Pinkie and become her own pony, not wanting to hide anymore.
Her whole schtick is clownery, jesting if you will! Still being a Pinkie at heart, she loves making others laugh!
Surprise won’t stay in the same place for long, you can see her nomading through the entirety of Equestria to see where she can make others laugh.
Fun fact! Her clown face is permanent, she asked Discord to literally mold her new appearance to have permanent clown makeup!