iiinova — where your digital self keeps evolving

Celia & Regina @birson.bsky.social · 04/08/2026

@aemythist.bsky.social made us this lovely art of us merged together!! Looking amazingly fluffy and cozy together~ He does seem a touch overwhelmed though x3 x3

A three-headed owl-protogen taur. Celia, the leftmost, owl-like head, looks cheerful and says "So, do you like it?" Aemy, the protogen middle head, blushes and says "Well- I- Uhh- i-it's very soft..." Finally, Regina, the other owl head on the right, replies, "Told'ja he'd love it~"

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Celia & Regina @birson.bsky.social · 12/06/2026

Inspiration often comes from unusual places~ Trying to get back in the habit of doing quick drawings for fun between commissions >v< #fatfur #furryart #monobutt

Celia and Regina, the conjoined owl women, sharing one big monobutt. Both faces are blushing, but Regina looks smug while stomping down the talon on her side of the body, while Celia looks over at her shyly.

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Celia & Regina @birson.bsky.social · 12/06/2026

Commission for @nebulathebun.bsky.social of their cute Lopunny character(s)! Looks like they make a lovely bartender~ #furryart #fatfur

A two-headed Mega Lopunny bartender using their four arms to serve several different drinks at once. One head with blue hair is winking towards the viewer while the other brown-haired head is handing a drink to someone off the canvas.

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Celia & Regina @birson.bsky.social · 12/06/2026

Finally posting comms again! Here's a colored sketch for @scepkight.bsky.social of a big heavy Sceptile taur!! Such a cute shape, if we may say so~ #fatfur #furryart

A heavyset Sceptile taur, looking confident with one forepaw lifted and their left hand pointing back at their face

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Celia & Regina @birson.bsky.social · 01/06/2026

Absolutely need to share this piece we got from @elbunny25.bsky.social of us with a big gorgeous #monobutt ~ Pose and shape inspired by a piece by @lexodynaro.bsky.social

Celia and Regina the conjoined, two-headed owls with a big fat monobutt, with the two of us looking back in surprise

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Celia & Regina @birson.bsky.social · 06/05/2026

Finally done with exams, so we rewarded ourselves with a silly drawing~ Our delivery bird Alicia sporting an embarrassing, air-filled monobutt~ #furry #furryart #monobutt #monobuttmay

Alicia, a pigeon delivery girl, looking back at her bloated monobutt, saying "I'm not sure this is going to help..."

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Celia & Regina @birson.bsky.social · 08/03/2026

Sneeve's dragged the two of us into getting big with him, and he doesn't seem like he's stopping anytime soon >v> >v> Wonderful commission for @snivycontrarian.bsky.social !! #furry #furryart #fatfur

A three-headed cloudbeast, Celia, Sneeve, and Regina, sharing one body that Sneeve is rapidly boating out by drinking tons of water to fill our shared belly... Celia and Regina are blushing and looking down at our swelling belly.

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Celia & Regina @birson.bsky.social · 08/03/2026

This is a lovely idea, hope it goes well! Another excuse for us to share the owels ref hehe >v<

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Celia & Regina @birson.bsky.social · 06/03/2026

More #monobutt doodles from our never-ending fixation... A couple of these are (pretty obviously) heavily inspired by the wonderful work of @.sadtooncat.bsky.social!!! (Definitely look at their stuff if you haven't seen it before, and if you enjoy this sort of thing x3)

Three chubby upper bodies attached to one wide monobutt lower body. Celia on the left is wearing magical robes, dressed to be an alchemist. Tereza in the middle is wearing an apron and tools to be a blacksmith. Regina on the right is wearing fancier clothes to be a jeweler. Their stance is wide to compensate for their huge, shared monobutt.

Celia, Tereza, and Regina as three heads on one body, as a Decidueye, Quaquaval, and Blaziken, respectively. They're sharing an enormous lower body monobutt that doesn't fit on the page.

Celia, Tereza, and Regina as three heads on one body, as a Decidueye, Quaquaval, and Blaziken respectively. Their monobutt lower body is enormous and wobbling as they take one massive step together on all fours.

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Celia & Regina @birson.bsky.social · 01/03/2026

💙 Here's a couple silly doodles we did of ourselves last night X3

The three of us with our big shared monobutt, Blaziken making us stand on one leg. Decidueye says "Careful!" as her leg js clearly struggling to hold our heavy body up

The three of us sitting on our big shared monobutt, each enjoying a different drink

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Celia & Regina @birson.bsky.social · 01/03/2026

Okay we don't normally share stuff like this, but we've been fixating on it for days now and need to share our weird stuff X3 The three of us as fatty Pokemon birds (Celia as 💚 Decidueye, Tereza as 💙 Quaquaval, and Regina as ❤️ Blaziken), with our upper bodies all attached to the same big fat butt~

Three fatty pokemon bird upper bodies attached to one fat monobutt. Left to right: Decidueye, Quaquaval, and Blaziken. Our butt is wobbling

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Celia & Regina @birson.bsky.social · 02/01/2026

Got put in a mood try being cloudbeasts ourselves after that last commission x3 (Cloudbeasts by @cloudchomps.bsky.social ) #furry #furryart #fatfur

The owels Celia and Regina, but now as a bottom-heavy Cloudbeast

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Celia & Regina @birson.bsky.social · 01/01/2026

Watch out below! A very big and very powerful cloudbeast is looming above~ Super cute colored sketch commission for @snivycontrarian.bsky.social !! #furry #furryart #fatfur

A big-bellied cloudbeast with a smug expression, lance held aloft.

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Celia & Regina @birson.bsky.social · 31/12/2025

Just a very cozy dragontaur enjoying themselves~ Full commission for @dilmir.bsky.social !! #furry #furryart #fatfur

A two-headed dragon taur, looking rather chubby and comfortable :3

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Celia & Regina @birson.bsky.social · 31/12/2025

Looks like the three of us are sharing some real crowded-looking face panties on our big fat monobutt~ Tereza's annoyed, but Regina's a fan, and Celia's far too embarrassed to comment x3 Embarrassing art inspired by the lovely work of @transsheep.bsky.social !!

Three ladies sharing one body, Celia and Regina the owls and Tereza the dragon. They're body is very bottom-heavy and pear-shaped, with a huge monobutt. They're wearing red and black-patterned panties with all their faces plastered on their butt, smooshing together. Tereza looks annoyed, saying "Ugh, our panties are getting too crowded!" as Regina replies, "I don't know, I like it~"

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Celia & Regina @birson.bsky.social · 29/12/2025

Congrats on the milestone! x3

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Celia & Regina @birson.bsky.social · 27/12/2025

Congrats on the milestone, seriously impressive x3 And good luck to everybody in the raffle! (also think this is the first time we've posted our ref publicly x3)

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Celia & Regina @birson.bsky.social · 24/12/2025

Merry Christmas and happy holidays, everyone! Hope everyone has a wonderful holiday season, from the bottom of our (shared) heart!~ Got a quick sketch in before the holiday season was over, heheh x3 #furry #furryart #fatfur

Two-headed owls Celia and Regina wishing everyone a merry Christmas and happy holidays!~

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Celia & Regina @birson.bsky.social · 24/12/2025

Barb'dat seems to be attracting quite the crowd with her pole dancing! The pole doesn't seem to be enjoying it so much, though... Colored sketch commission we had the honor of doing for @jellybru.bsky.social !!! #furry #furryart #fatfur

A plump avian-esque character named Barb'dat, pole dancing in front of crowd. Her sheer weight is causing the pole to bend and dent.

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Celia & Regina @birson.bsky.social · 23/12/2025

Colored sketch commission for @highdrag.bsky.social, a merge of their different sonas! An adorable little (big) hydra~ #furry #fatfur #furryart

A busty, bottom-heavy three-headed merge between a bear-tanuki, dragon, and toon dog.

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Celia & Regina @birson.bsky.social · 22/12/2025

One of the cutest and prettiest cerbs around, we had the honor of drawing Tabrienna!! Colored sketch commission for @tabrienna.bsky.social !! Thank you so much for commissioning us <3 #furry #furryart #fatfur

Tabrienna, the white furry Samoyed cerberus, looking cute and hefty x3

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Celia & Regina @birson.bsky.social · 22/12/2025

A while back we had a Cinderace phase, we love the design hehe x3 So here's us a big fat purple one!! #furry #furryart #fatfur

A three-headed Cinderace with the names Celia, Tereza, and Regina, all sharing a chubby body and a huge butt >v<

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Celia & Regina @birson.bsky.social · 20/12/2025

We're not too big now... right? >v>' We were inspired to draw ourselves with huge fatty faces, and we're pretty proud of the result~ <3 #furry #furryart #fatfur

Two-headed owls Celia and Regina filling the canvas with their fatty faces, big cheeks and necks smooshing together~

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Celia & Regina @birson.bsky.social · 20/12/2025

Lovely commission we got from @sumisune.bsky.social !!~ The two of us might be mages, but we can only lift all this bird heft up for so long >v<; #furry #furryart #fatfur

Fat two-headed owls Celia and Regina, floating above the ground (barely) while demonstrating some ice magic in Celia's hand and fire in Regina's~

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Celia & Regina @birson.bsky.social · 20/12/2025

AMAZING art we got from @artienuki.bsky.social !~ Just the two of us being adorable and cheek-smooshy~ #furry #furryart #fatfur

A bust of the two-headed owls, Celia and Regina!! We're squishing our cheeks together x3

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Celia & Regina @birson.bsky.social · 19/12/2025

An all-too-common situation for us big owels! But we do happen to enjoy it~ Lovely lovely commission we got from @lunarlillium.bsky.social !!! #furry #furryart #fatfur

Fat two-headed owls stuck in a door! Celia, on the left, is saying "I think... we're stuck," and Regina, on the right, is saying, "You think?"

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Celia & Regina @birson.bsky.social · 13/12/2025

Little drawing for and featuring @artienuki.bsky.social !! Some belly-pressing fun with us as a big dragon~ #furry #furryart #fatfur

A small chubby tanuki pressing bellies with a much bigger and fatter two-headed dragon

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Celia & Regina @birson.bsky.social · 31/10/2025

These owels become big fat bats under the full moon~ Happy Halloween! Lovely YCH we got from @taylorchubby.bsky.social !!! She did such a good job X3 #furry #furryart #fatfur

A very fat two-headed bat girl under the full moon

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Celia & Regina @birson.bsky.social · 15/10/2025

Had a desire to be bats, especially given the current season!~ Super proud of how this came out, we think we look wonderful this way~ Hope everyone is having a good October so far!~ #furry #furryart #fatfur

A two-headed fatty bat, wearing a tank top with the text "FAT BAT(s)" on it. Celia, the head to the left, is smiling and waving with her arm, while Regina, the other head, is grinning proudly.

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Celia & Regina @birson.bsky.social · 18/08/2025

And inspired by the commission we got, here's a quick doodle of Casscrow and Evaal again :3c

Two-headed dragon taur waddling forward with a very large, round belly pushed out towards the viewer. They have a lower belly swaying between their legs too.

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Celia & Regina @birson.bsky.social · 18/08/2025

Another incredible commission we got from @katandstar154.bsky.social !!! This time it's Casscrow and Evaal in their taur form x3

A two-headed dragon taur with pearlescent frills, colorful scales, and tailbags.

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Celia & Regina @birson.bsky.social · 17/06/2025

One of us seems pretty confident we can fly like this... at least we have a lot of padding when we inevitably fall back down x3 #furry #furryart #fatfur