Would love to see more Shenron pooping from you!
Or maybe Shenron cum inflating Beerus using him as a living condom
But yeah, more Shenron from you is always welcoming!

Hmm, maybe Toriel? She could be eating a slice of one of her pies and have a single-cloth garment draping down her back and over her rear, and she’d be pushing/“crowning” out a log of purple scat that would stick out against said garment!

Another miltank would be a dream from you!!!

Hyper gaped aggron hole, as usual~

Also Dingodile doin some pooping, probably

1. Likulau from nekojishi
2. Garmr from tokyo afterschool summoners
3. Since the ttyd remake is coming out soon koops and/or rawk hawk
4. Fox X Wolf stuff from star fox
Lastly 5. that one sexy tiger dude from delusional monthly magazine
In like some vore, scat and/or fart stuff
May be even cock tf and diaper stuff

Portia from Animal Crossing, farting on anon's crotch x3

Might be a bit out-there, but how about a Riolu (or other similar pokemon), with three prehensile, several-feet-long (and preferably humanoid) dicks that piss endlessly, if you're open to that?
(Optional) Bonus points if the Riolu's acting completely casual about his actions. Extra bonus points if he's out in public :3c

Alternatively, the same idea but replace the "endless piss" part with "endless cum" if you'd prefer that over piss.

Thanks for the chance, discovered you just now and I'm already a fan <3

I'll toss a bunch of ideas your way!

Sprigatito (I really liked the one you did)
Deerling (Same story as Sprigatito)
Audino (Perhaps its "healing" is a little unorthodox?)
Smeargle (Underrated in design. I have a Smeargle oc of my own, but I probably would be overstepping my boundaries if I asked for that.)
Miltank (Cow dumping a ton always is good~)

Animal Crossing Bob (My fav dude)
Animal Crossing Maple (Short bear gal good)
Animal Crossing Kicks (He'd look good with your usual additions)
Animal Crossing Digby (The less popular brother of Isabelle and also would look good)

As for fetishes? I could name a couple.
For some of the scat stuff, you could definitely try having some of them using improvised toilets (that'll likely get overfilled). Trash cans, bathtubs, plant pots, gardens, grocery bags, sky's the limit!
As for just simple hyper anus stuff, could definitely make it look like it reeks. Perhaps a very faint brown mist of stink? Maybe some sweat on the cheeks?