I gave Jarlaxle an axolotl*
So I have a homebrew DnD world (it's called Untoril because it's Not-Toril, there's more lore there I'm not explaining in this post) and Jarlaxle Baenre is an important NPC there. He was a particularly crucial NPC in the first campaign I DMed in the setting
My Jarlaxle has a pet axolotl*
Now my dear friends and players at the time were obsessed with a certain gif they found on Discord called Wooper Wednesday
^ This is the gif in question
Now, this gif was posted every Wednesday in my DnD server for several weeks straight, ESPECIALLY on the weeks when we were playing DnD ON Wednesday
Jarlaxle had essentially become the party's weird not-dad figure who was definitely teaching them how to do crime and definitely had his own personal reasons for aligning with them, but he was also trying with his whole chest to kill every bad guy who so much as frowned at the party, so they liked him
An important note about this campaign is that while it was primarily about Untoril, the existence of other worlds was a key world building detail (of which I will not elaborate in this post)
All you need to care about is that other worlds existed, and my friends looked me dead in the eye and went "So. We have a Pokemon world. It's canon. How does this affect Untoril" and because I'm not a square, I let them play with Pokemon for a bit. (This was not in the campaign itself - but anything the players did with their characters outside of session was canon unless it contradicted campaign lore)
During the campaign, one of the party members had set out to make custom animal plushies for all PCs and a few important NPCs. They asked what the PC/NPC's favorite animal was, and a few weeks later in game they would have a custom plushie.
In the fugue state Jarlaxle puts me in, he dramatically explained why Axolotls were god's perfect creatures and we didn't deserve them
Thus, when asked if Jarlaxle would go to the Pokemon world, I had no choice but to send him there and give him a Wooper
He did initially steal said Wooper, and was tracked down by Pokemon Rangers until he filled out the proper adoption paperwork, which he found so goddamn funny that he just did it with no complaints
The Wooper's name is legally "Better Sarah," after his adopted daughter, (because in Jarlaxle's paraphrased words "Better Sarah won't ever run off and leave me to go kiss bard boys,") but everyone calls it "Wooper Baenre"
Wooper Baenre has matching hats with Jarlaxle. Wooper Baenre also has a gun taped to his tail with masking tape. Guns don't exist in Untoril. Wooper Baenre is essentially Stabby the Roomba for the Bregan D'aerthe