NastyHooves
Elements of Harmony - Had an OC in the 2022 Community Collab
Non-Fungible Trixie -

Gay
@Wiimeiser
 
@Fingusa
 
Tbh Littlepip’s sacrifice is largely overplayed. Yes she went through a few moments of ||intense pain being sent through the otherwise impenetrable Single Pegasus Project main hub shield by being immolated in Spike’s fire || which is commendable but far from extraordinary when you think about every firefighter in the world risking that on a daily basis. Then she is just said to remain in SPP because she is too frail to leave it and not die. So eh, it’s just blown out of proportion by the author.
Wiimeiser
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Elements of Harmony - Had an OC in the 2022 Community Collab
Twinkling Balloon - Took part in the 2021 community collab.
My Little Pony - 1992 Edition
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab
Dream Come True! - Participated in the MLP 9th Anniversary Event
Wallet After Summer Sale -
A Tale For The Ages - Celebrated MLP's 35th Anniversary and FiM's 8th Anniversary
An Artist Who Rocks - 100+ images under their artist tag

(Foil Hat)
@Fingusa  
One thing I remember hearing is that she had to destroy her physical body… Though that may have been an alternate interpretation…
Fingusa
Non-Fungible Trixie -

Ante Up
I thought her sacrifice was mostly self-imposed and it was later said by the author herself that she can actually leave and her friends can visit her anyway (though most likely through a very painful process)?
Background Pony #87A1
On a scale of 1 to 10…