Stage 1
Section 1
The first level of Big Forest is another straightforward one. There is no significant increase in difficulty, and the terrain is actually a bit flatter than the levels in Grass Land. You will encounter the Cappy for the first time here. You can inhale these bouncing mushrooms to leave the living stalk, which you must attack again to defeat. However, you can defeat them in one hit if you just spit something at them or use a copy ability.
(1) The fast, dashing Waddle Dee makes another appearance here. You won't have to worry about it if you're standing on one of the thin platforms though.
Section 2 - Mini-Boss: Scarfy
Although this room is laid out like a mini-boss room, complete with the wriggling bag hanging from the ceiling, the mini-boss you will face is actually a common enemy later in the game. This cute, flying creature is called a Scarfy. Unlike Efreeti, Scarfy does not give you a copy ability if you inhale it. In fact, if you even try to inhale it, it will turn into a menacing monster that will chase after you until it self-destructs. Your best bet here is to use a copy-ability to attack it, or inflate yourself and spit an air puff at the Scarfy if you don't have one. Note that when the Scarfy is defeated or if it self-destructs, it will go out in an explosion that can harm you if you're too close, so be extra careful if you're using an ability like Burning.
Once the Scarfy is defeated, the bag drops to the ground, releasing another one of Kirby's friend, Coo! While Rick performs better on the ground, Coo enhances Kirby's abilities in the air. When partnered up with Coo, you can now inhale and use copy-abilities while flying about. However, if you are already accompanied by Rick, the bag will drop Gooey instead of Coo. This benevolent blob of Dark Matter only appears if you already have an Animal Friend with you, and will restore one bar of health when collected. If you're lucky, you might also encounter Gooey's girlfriend, Blob. She does the same thing as her boyfriend, but encountering her count towards 100% completion.
Section 3
The final section of the level is still quite simple, but there are now also several bottomless pits that you have to avoid falling into. You won't have to deal with the terrain if you have Coo though, as you can easily soar across the entire level without touching the ground. You will have to contend with the many flying enemies if you choose to do so.
(2) There is another new enemy that you will encounter in this section. These spiky balls are called Gordos. They cannot be defeated through any means and serve more as obstacles than enemies, as they will mostly ignore you and move along a set path. It's best to completely avoid them whenever you run into them in the future.
(3) Yet another new enemy will be introduced right before the exit, but this one actually gives you a new copy ability! Sir Kibbles are short knights that throw boomerang blades. Swallowing them nets you the Cutter ability, which lets you do the same thing.