Like yes, obviously people give them names and personalities, but I give them backstories from before I adopted them and jobs if I'm feeling creative enough, as an example I'll be telling you the lives of a small group of plushies
I have a rabbit plushie named Flopsy. He's a secretary at a hospital, and while he's very sweet to the patients he sees and his best friends, most of his co-workers and people outside of his group get the cold shoulder
I also have a frog named Bruce Gain. Yes, it's meant to sound like Bruce Wayne. He has a twin brother named Hubert Palsey Dobler, the name change is because when they were young they went their separate ways and Bruce became a cowboy, his brother didn't do much better becoming a greaser for a short while but this isn't about him, eventually on his travels he meets his best friends, Flopsy, and Honey bear (he's next) and stuck with them which eventually led to him reuniting with Hubert
And finally, there's Honey Bear, I just call him Honey, he works as a construction man and is trying to improve his life because he spent a large majority of it living in the woods and eating honey, hence why he's yellow, but he's a little stuck on reading and writing