Background Pony #B4EC
@Background Pony #11C5
Step-siblings means that one of one sibling's parents married one of the other sibling's parent, but both siblings were alive before the marriage, so they aren't biologically related.
I think you mean half-sister (meaning that they have one biological parent in common, and she has quite a few half-siblings)
Badumsquish
Generic Messy Hair Anime Anon - Seen and done more than you can imagine
Kalianne - Derpi Supporter
Verified Pegasus - Show us your gorgeous wings!
Preenhub - We all know what you were up to this evening~
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
My Little Pony - 1992 Edition
Best Art Program Ever - For artists who were courageous enough to draw something for the April Fools day.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab

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Background Pony #11C5
Will she ever meet her stepsister >>2272412
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Badumsquish
Generic Messy Hair Anime Anon - Seen and done more than you can imagine
Kalianne - Derpi Supporter
Verified Pegasus - Show us your gorgeous wings!
Preenhub - We all know what you were up to this evening~
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
My Little Pony - 1992 Edition
Best Art Program Ever - For artists who were courageous enough to draw something for the April Fools day.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab

ᗡ: 📶 📡
Background Pony #11C5
Are gonna get of those who work at that shop near the everfree? And a picture of anonfucking a female timberwolf in the future
Turbotowns
Artist -

Acolyte of Madness
@Bionomaly
Ah, I get it now. XD
Bionomaly

@Turbotowns
DnD meme that bards seduce/have sex with anything that moves.
Turbotowns
Artist -

Acolyte of Madness
@Background Pony #F826
Bard? I don't get it…
Badumsquish
Generic Messy Hair Anime Anon - Seen and done more than you can imagine
Kalianne - Derpi Supporter
Verified Pegasus - Show us your gorgeous wings!
Preenhub - We all know what you were up to this evening~
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
My Little Pony - 1992 Edition
Best Art Program Ever - For artists who were courageous enough to draw something for the April Fools day.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab

ᗡ: 📶 📡
@Background Pony #F826
Lol pretty much XD
Background Pony #EBC9
Anon is a bard confirmed.
toonbat
A Really Classy Artist - 250+ images under their artist tag
Magnificence - Artist with 100+ Safe/Suggestive images with over 100 upvotes, and 5+ Questionable/Explicit images with over 350 upvotes
Hard Work - Merited Perfect Pony Plot Provider badge with only their own art
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Not a Llama - Happy April Fools Day!
An Artist Who Rocks - 100+ images under their artist tag
Artist -

We need a new tag. 'What has Anon done'

And maybe a 'what hasn't anon done' while we're at it.
Supuhstar
Silver Bit -

Fertilizer sticks: "GUARANTEED!"
FilthyRichFan25
Friendship, Art, and Magic (2020) -
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
An Artist Who Rocks - 100+ images under their artist tag
Artist -

cool a timberwolf hybrid! :)
Zebasiz
Bronze Bit -
Friendly Griffon - For helping others attend the fifth anniversary party
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
A Perfectly Normal Pony - <Zeb> That's why yer female partner can use a trapon
Magnificent Metadata Maniac - #1 Assistant
Artist -

@Bionomaly
Now I'm picturing her trying to fuse with him. And it ending up with her sitting on his shoulders going "Now we are unstoppable!"
Bionomaly

@Badumsquish
Thinking back to Spike at your service episode I wonder if she tries to get GMHAA to fuse with her when she feels threatened
Badumsquish
Generic Messy Hair Anime Anon - Seen and done more than you can imagine
Kalianne - Derpi Supporter
Verified Pegasus - Show us your gorgeous wings!
Preenhub - We all know what you were up to this evening~
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
My Little Pony - 1992 Edition
Best Art Program Ever - For artists who were courageous enough to draw something for the April Fools day.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab

ᗡ: 📶 📡
@Zebasiz
@thps48
I dunno, I hadn't really thought that far. All I ultimately decided on is that if she takes a good enough whack (like trips and falls or something) her legs shatter into sticks. She can pull herself right back together though.
thps48
Wallet After Summer Sale -

Young Leosword
@Zebasiz
Besides the possibility of shapeshifting her legs into a Mario Kart, I've also wondered what her lower torso looks like, and I'd like to think it could be designed to look like the end of a plant bulb or edible root. X3
Zebasiz
Bronze Bit -
Friendly Griffon - For helping others attend the fifth anniversary party
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
A Perfectly Normal Pony - <Zeb> That's why yer female partner can use a trapon
Magnificent Metadata Maniac - #1 Assistant
Artist -

Huh… A thought has occurred to me: Is similar magic forms her lower half as we've seen keep regular Timberwolves together. Does she have any conscious control over it? And if yes, Can she make her lower-half into any form she wants?

Some of what comes to mind is:
Dr. Arliss Loveless' Spider-walker wheelchair from Wild Wild West.
Being able to form more trees around her as a form of armor.
Just making super long legs in order to reach something high-up.

I desire to know the possibilities!
Scrounge
My Little Pony - 1992 Edition
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!
Since the Beginning  -

nobody's favorite
With each full moon that passes, it gets harder and harder to find a babysitter for her.
Turbotowns
Artist -

Acolyte of Madness
Hmm Cute kid.
Psyga315
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!
Thread Starter - We Are Our Avatars
The End wasn't The End - Found a new home after the great exodus of 2012

The Fallen Brony
Friginia: I'm turning into wood!

Me: {sees her legs as normal} Oh, don't be making stuff up.

Friginia: You just don't believe it!
thps48
Wallet After Summer Sale -

Young Leosword
@thps48
Making sure: Cragodile?
Background Pony #4B39
@SnuggleLord
No offense but all your comment is really saying is "my headcannon > artists headcannon" which frankly seems both pointless and rude
Background Pony #1743
@SnuggleLord
This same artist made a picture of a slime-based Octavia impregnating a man by forcing him to swallow some of her mass which culminated in the man having a "family" of ten slime-based Octavias with more on the way. "Possible" is pretty low on his list of priorities I think ;-)