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Jasper Underbelly

@jasperunderbelly

A wolverine writer on the internet. Rawr. Check #underbellytale for wolverine tales. FA: https://www.furaffinity.net/user/underbelly

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08.12.2024
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Latest posts by Jasper Underbelly @jasperunderbelly

D'awww. That's a pretty darn cute suit.

11.03.2026 21:03 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Jasper the wolverine enjoying a sunny snow day in Portage, AK โ˜€๏ธโ„๏ธ

#wolverine #awcc #akwildlife #alaskawildlifeconservationcenter

21.11.2025 19:29 ๐Ÿ‘ 55 ๐Ÿ” 20 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Still thinking on this. And being worn by toon that keeps adjusting their ratings, and therefore adjusting what be pressing against the undies they're wearing~

11.03.2026 19:03 ๐Ÿ‘ 6 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Color me tempted.

11.03.2026 18:17 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image

Oops, life has been so hectic I forgot to stop and relax for #macromonday #macromarch
Thankfully I can think back on when @slipperysqueaks.bsky.social made me big to relax at Yellowstone, and was not upset about it at all

I could use a spa day right now with all my little friends
(C) me and friends

10.03.2026 17:16 ๐Ÿ‘ 160 ๐Ÿ” 30 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0

FTM, like with any TF, comes down to:

- what makes the new form strange/unusual/fun/weird

- put character into situations that highlight those features~

And for me, there's a lot in FTM that's to consider in that regard~ (Wake up in morning and oof there be some strange new feelings...)

11.03.2026 14:17 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Definitely understand the trickiness, being creature who keeps sampling FTM via writing.

Sometimes fun to layer on some additional complication, like slight reality shift (where character remains aware), then reveal that in new reality/form has a boyfriend or girlfriend with impending date.

11.03.2026 14:14 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

(Mind has been a dash mush the last few weeks/months, so it be good to get back to basics. Like undies TF, toon hyenas, and ferrets.)

10.03.2026 23:24 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

(My mood today has been between this and "I think everyone should be turned into ferrets")

10.03.2026 23:23 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

Underwear TF'd then worn by a punk-flavored toon hyena (null/monorump'd).

10.03.2026 23:22 ๐Ÿ‘ 23 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
A fox (Rex Plushpaw) wearing a varsity jacket and some briefs, which he's tenting significantly with an erection. Rex is reacting with surprise and saying "Huh!? Wh-!?! T-This underwear...it's...it's purring!?" and the underwear is reacting with heart symbols as if enjoying experience. 

There's another pair of briefs underwear hanging on clothesline with symbol suggesting aware or at least reacting. 

Totally implication that the underwear are actually two characters that have somehow been turned into two pairs of briefs.

A fox (Rex Plushpaw) wearing a varsity jacket and some briefs, which he's tenting significantly with an erection. Rex is reacting with surprise and saying "Huh!? Wh-!?! T-This underwear...it's...it's purring!?" and the underwear is reacting with heart symbols as if enjoying experience. There's another pair of briefs underwear hanging on clothesline with symbol suggesting aware or at least reacting. Totally implication that the underwear are actually two characters that have somehow been turned into two pairs of briefs.

Trying out some briefs I found hanging out on clothes line and they be surprisingly...urm...comfy and seem to be...purring?!

Uh...wonder if these two pairs of undies have anything to do with those two @catsnbriefs.me kitties...

(Art by @catsnbriefs.me <3)

09.11.2024 20:31 ๐Ÿ‘ 253 ๐Ÿ” 35 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 1
Rex Plushpaw, looking surprised/confused in expression and pose, as his vulpine penis is erect from its sheath.

Rex Plushpaw, looking surprised/confused in expression and pose, as his vulpine penis is erect from its sheath.

Here is version sans-mysterious-undies, which is just as good IMHO, to the credit of @catsnbriefs.me.

Comes across as someone post-TF/swap being surprised at their new vulpine erection. <3

30.01.2025 16:01 ๐Ÿ‘ 28 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Rex Plushpaw, a fox, looking surprised and flustered at, Ronts, a bear-dog, floating over to be close and intimate, their noses touching. Both are tenting their respective underwear and frotting up against each other.

Rex Plushpaw, a fox, looking surprised and flustered at, Ronts, a bear-dog, floating over to be close and intimate, their noses touching. Both are tenting their respective underwear and frotting up against each other.

Appears that Rex's friend, Ronts, is liking the feeling of the new underwear. Seems to be putting the floaty bear-dog creature in a frisky mood, while the fox is debating whether he should mention where the @catsnbriefs.me branded briefs came from...

(Art by @catsnbriefs.me~)

11.12.2024 13:13 ๐Ÿ‘ 168 ๐Ÿ” 26 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Rex Plushpaw, fox, wearing varsity jacket and briefs, laying down, showing off tail with happy expression. He's wearing undies and is very slightly exposed. Seems to be in a classic body pillow pose.

Rex Plushpaw, fox, wearing varsity jacket and briefs, laying down, showing off tail with happy expression. He's wearing undies and is very slightly exposed. Seems to be in a classic body pillow pose.

Rex presumably posing for a body pillow design.

(Art by Mac, unable to find their socials ATM.)

30.01.2025 15:51 ๐Ÿ‘ 26 ๐Ÿ” 8 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0

Was fun having a other go at trickster energy and how a trickster can play with its appearance.
#writing

10.03.2026 14:47 ๐Ÿ‘ 7 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

One of those wind up toys that hops along sounds fun. Such a cute hoppy little kangaroo toy to send along my desk when bored. Might end up turned back. Might end up on knickknack shelf. Who knoooows.

10.03.2026 14:41 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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when it works it works

09.03.2026 01:49 ๐Ÿ‘ 8297 ๐Ÿ” 2200 ๐Ÿ’ฌ 99 ๐Ÿ“Œ 92

TFing your friend into a cartoon pair of googly eyes that you can place on anything and have โ€˜em instantly possess said object. Fire hydrant? Street lamp? Refrigerator? Just slap โ€˜em on there! #TFTuesday

10.03.2026 13:50 ๐Ÿ‘ 28 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Blurred image of a fox in a varsity jacket with title and tags over top
Trickster Confidence
Human > Anthro Fox TF
Female to Male
Twinning
Feral Fox TFs
Mental Shifts
Sexual Relations
Trickster Energy 
~3900 Words

Blurred image of a fox in a varsity jacket with title and tags over top Trickster Confidence Human > Anthro Fox TF Female to Male Twinning Feral Fox TFs Mental Shifts Sexual Relations Trickster Energy ~3900 Words

While struggling with presentation about tricksters, Becca accidentally summons a fox trickster fellow who's more than willing to assist.

(A trickster triggered FtM anthro fox TF interlude~)

www.furaffinity.net/view/64261901/

#underbellytale #writing

09.03.2026 13:22 ๐Ÿ‘ 10 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

A very apt image for post-daylight-savings-time nonsense. *yawns and adjusts*

09.03.2026 14:38 ๐Ÿ‘ 7 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Then the -INT -INT -INT -INT -INT effect hits.

09.03.2026 14:19 ๐Ÿ‘ 24 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

(Thanks to @haurbus.bsky.social for the preliminary idea/inspiration and @geoholms.bsky.social for the use of his fox character @rexplushpaw.bsky.social.)

09.03.2026 13:22 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Blurred image of a fox in a varsity jacket with title and tags over top
Trickster Confidence
Human > Anthro Fox TF
Female to Male
Twinning
Feral Fox TFs
Mental Shifts
Sexual Relations
Trickster Energy 
~3900 Words

Blurred image of a fox in a varsity jacket with title and tags over top Trickster Confidence Human > Anthro Fox TF Female to Male Twinning Feral Fox TFs Mental Shifts Sexual Relations Trickster Energy ~3900 Words

While struggling with presentation about tricksters, Becca accidentally summons a fox trickster fellow who's more than willing to assist.

(A trickster triggered FtM anthro fox TF interlude~)

www.furaffinity.net/view/64261901/

#underbellytale #writing

09.03.2026 13:22 ๐Ÿ‘ 10 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
Kobolds smooching another kobold in a flatcap. The kobold on right is blushing, while kobold on left is confident kissing.

Kobolds smooching another kobold in a flatcap. The kobold on right is blushing, while kobold on left is confident kissing.

(Did more of this today. Hmm. A nice passtime having kobold creatures have a good time together.)

(Have a cropped preview of catsnbriefs art of some kobold smooching. Full bit to be posted later on~)

08.03.2026 18:20 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hmmmmmm...good question~

06.03.2026 21:08 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Hmmmm...maybe should have left a recognizable design...

06.03.2026 21:08 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I'm not much of a math creature~

06.03.2026 21:07 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Behold the wolverine in his natural state.

06.03.2026 20:44 ๐Ÿ‘ 16 ๐Ÿ” 3 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0
drawing of an anthro wolverine wearing nothing but white briefs and a flatcap with a feather. he's yawning as he walks, holding a hot cup of coffee on one hand and scratching his butt with the other. he has an obvious erection tenting his undies, and the design on his mug says "WOOD MORNING!"

drawing of an anthro wolverine wearing nothing but white briefs and a flatcap with a feather. he's yawning as he walks, holding a hot cup of coffee on one hand and scratching his butt with the other. he has an obvious erection tenting his undies, and the design on his mug says "WOOD MORNING!"

commission for @jasperunderbelly.bsky.social! โ˜•๐Ÿฉฒ๐Ÿฅฑ

#furryart #nsfw

06.03.2026 20:17 ๐Ÿ‘ 273 ๐Ÿ” 59 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 3
Sketches of a wolverine-ish creature. He's wearing a pointed cap, has a little frill collar, and holding a scroll. 

In top right there's puff of smoke and a confused beaver. 

In lower right there's the wolverine creature pointing down at the beaver saying: "Let that be a lesson to yee. There be no axes in the sacred forest. If you want to chop a tree, ye can do it yourself"

Sketches of a wolverine-ish creature. He's wearing a pointed cap, has a little frill collar, and holding a scroll. In top right there's puff of smoke and a confused beaver. In lower right there's the wolverine creature pointing down at the beaver saying: "Let that be a lesson to yee. There be no axes in the sacred forest. If you want to chop a tree, ye can do it yourself"

Long ago, I had a gnome OC. But, me being me, was like "Hmm, what it looked like a wolverine with a pointed cap and also dispensed karmic TF stuff on humans for conservation purposes or something?"

A bit back, @kekecoyotl.bsky.social was nice enough to do his take on Noone, the gnome~

๐Ÿ™Žโ€โ™‚๏ธโžก๏ธ๐Ÿ’จโžก๏ธ๐Ÿฆซ๐Ÿ’ฆ

06.03.2026 14:58 ๐Ÿ‘ 51 ๐Ÿ” 12 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0