"No one has ever seen a Komala awake. It eats, travels, and even battles while sound asleep! Its saliva can be used as medicine for the sick or sleepless, according to ancient people. They say if you take a small amount of the saliva remaining after it eats leaves, water the saliva down, and drink it, you’ll be able to sleep well. Komala clings to a log pillow that its parents have given to it. Once it has grasped this log, it almost never releases it. If it does lose hold of its log, the Pokémon will be unable to sleep well and will thrash about wildly. Apparently it will sometimes cling to the arm of a Trainer it trusts.
The ever-sleeping Komala’s expression sometimes changes, as if has awareness of its surroundings and the talking of people nearby. But it appears that these changes in expression are actually just a result of the dreams it’s experiencing."
Tl;dr The Koala is the Pokemon