19/23 of my pets finished their training (the green bar) But i dont know what exactly unlocked him

Didn't work for me with battle quests

well now i'm all kinds of confused because QwertyJoker also unlocked jim, and their post in the battle chat said all their pets were finished training p;

(i also peeked at their shared outfits -- i don't share any clothes with them, either)

All my pets (I only have 5) were in training.

I'd never done any battle quests before, ever. I completed some battle quests one by one and unlocked Jim after completing my 5th battle quest! :)

Yea, I did NOT have a pet that was done (but was currently training, blue box), but Amberglow did. However, I checked after my pet had finished training (green box) and still did not unlock him. :/

Put one of my "weakest" (he's had no training at all) pet in training (for Level, obvs). Also put one of my weakest pets that had had some training in a session for strength.

my pet just finished training, i had her both blue and green and that didn't trigger anything for me

i tried seeing if wearing an item with holiday item rarity would trigger it but it didnt. i also tried having a variety of sweets and pies in my inventory and that didn't do anything.

so specifically you DON'T have any pets that are DONE training? no green boxes? but Amberglow did have pets who were done/have the green background?

thinking about it, it shouldn't require more than one pet since some people only have one. i highly doubt it's inventory/avatar/active pet related -- i only share with Amberglow's avatar, my inventory was just battle quest rewards and new year tokens, and my active pet is my strongest (who isn't in training)

I dunno. I had 1 pet in training and 17 not training and didn't get it, while my partner Amberglow had like, 9 pets finished training and 1 pet not and did unlock him.

I also cleared out my inventory of all food items and tried making my weakest pet my active. Neither worked.

Nope.
Not wearing running shoes and then visiting him either.

...when i visited the training center after the post went live.
i have 43 pets; three were in training (blue boxes), six were not (red boxes), and 34 were finished (green boxes). maybe you need a mix of pets in and out of training? i was in the middle of battle quests (finished level 7 with a pet currently in training) but i don't think that's relevant

Well it's not visiting him with your strongest pet active.

My partner Amberglow unlocked him, so I asked them. They don't have anything in their inventory except discount cards and minion traps, all of which are locked. They also don't have anything special on their avatar, but the list is on their profile if you're interested in checking.

Well it's not putting a pet in training, and it's not cancelling a session...

HEALTH 900
STRENGTH 800
DEFENSE 750
SPEED 700
EXP 800
jim is a hard challenger

(And it involves a bit more than just visiting him)

Jim Ball
Peanut Butter Marshmallow Protein Shake

Ha, just got him a few minutes ago going to the training page. :D