Background Pony #C0F7
Maybe uploader mistook RD for Derpy because of bright hair color.  
Or maybe Uploader sees something we don’t.
RIG
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).
Preenhub - We all know what you were up to this evening~
Wallet After Summer Sale -
Equality - In our state, we do not stand out.
Not a Llama - Happy April Fools Day!
Thread Starter - Five Nights at Freddy's thread
Perfect Pony Plot Provider - 10+ uploads with over 350 upvotes or more (Questionable/Explicit)
The End wasn't The End - Found a new home after the great exodus of 2012
Fine Arts - Two hundred uploads with a score of over a hundred (Safe/Suggestive)

The Anti-Normies
@Masem  
what? derpy is not here, the one in Rarity’s nightmare is Mabel.
Masem
Elements of Harmony - Had an OC in the 2022 Community Collab
Twinkling Balloon - Took part in the 2021 community collab.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends
Fine Arts - Two hundred uploads with a score of over a hundred (Safe/Suggestive)
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Helpful Owl - Drew someone's OC for the 2018 Community Collab
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag

DERPY IS NEW MANE 6
Psychopomf
The End wasn't The End - Found a new home after the great exodus of 2012

Larry Shadowfright is best minion!