Hi Hi Puffy AmiYumi

Main Villain Bio: Sunikura - She is a giant snake monster who feeds on the flesh of innocent humans, and an enemy of Atchan.

Main Villain(s): Sunikura

The square dancers from Dance A-Go-Go are seen on the front cover of Square Dancing Monthly Magazine.

Photo's seen: Kaz scratching his butt Yumi reading Square Dancing Monthly Magazine Kaz picking his nose A thumb Swirl in Ami's right eye Yumi using the bathroom

A chainsaw can be seen in the pile of Yumi's stuff.

Kitty, Monkey, and Bunny Huggles, from Collect All 5, can be seen in the pile of Yumi's stuff.

This is the second time we see Yumi as a kid since "Opera Yumi" but with a different hair style.

In "Ikkakujuu", when Yumi imagines accusing Ami guilty of breaking her new guitar, one of her thoughts has Ami in her prisoner suit from Cell Block Rock, but no hat or mustache.

Super Zero marks the first time we see Ami and Yumi as little kids.

The word "Ikkakujuu" means "unicorn" in Japanese.

In the beginning of "Artist Ami," Kaz wore peach glasses for the first time.

In "Artist Ami," Jang Keng appears without Tekirai for the very first time.

Atchan always calls Yumi " The purple-haired one" and never by her real name.

The camp that Ami, Yumi, and Atchan attended as kids is Camp Youwannasushi.

First appearances of Atchan and Sunikura, the giant snake monster.

Featured Song: Su-I Su-I

Credits: Atchan and Sunikura, and Yumi punching Atchan in the face after trying to pinch her piece of cake.

The name of the evil giant snake monster is "Sunikura".

Look Hard: When Atchan talks, his lips move the same way Ami's, Yumi's, and Kaz's do.