Based on this bounty https://civarchive.com/bounties/499/lora-for-teddie-persona-4-arena

I would say it only works about 20-40 percent of the time, depending on the model. I mainly used photon.

You need to include the following in positive

teddiep4, portrait of creature, black eyes, round body, blue hair, cute,red suit, short arms, short legs, paws, cute eyes, simplistic, white face,

You want to keep negative prompts to a minimum and not include anything that would try to correct it into a humanoid form.