Afu
One of the sharper puchidols around, Afu's got a reputation for loving a good prank—whether the target is another puchidol or a hapless human. It's basically a professional glutton and loves onigiri even more than Miki does, which means the two are constantly bickering over food. Fans often note that Afu sleeps hard—you could shout directly at it and it probably won't budge.
It's also got this thing about gloating over its physique compared to Chihya's, which is kind of its whole personality in a nutshell.
Seasonal form: When summer hits, Afu sheds its blonde hair and grows brown hair instead. At the same time, its ahoge transforms into a heart shape, which is honestly pretty cute.
Sounds: It typically calls out "Afu!" and "Na no!" in its normal form. When it's in brown-haired mode, it switches to "Hanii!" especially when addressing Makoto or the Producer.
Cultural impact: Among puchidols, Afu's body length is literally used as a standard unit of measurement—1 Afu. You'll hear it used to describe swimming distances or how far away another puchidol is. Whether the ahoge counts toward that measurement remains unsolved.
Discovery & debut: Ami found Afu and named it. It showed up in Chapter 1.
Content compiled by AnimeList.moe from publicly available sources.