Sammo

A Wounded Prince - S2-E4

Trivia: A bored animator must have snuck in a joke when drawing Taki that gets the ball from Misaki; if you look closely to the left of the frame, you can see that there's a guy that makes a rather scary expression...because someone else in front of him snuck a hand into the front of his pants. (00:16:30)

Sammo ★

An Unfair Enemy - S1-E15

Trivia: To the left of the frame, someone in attendance behind Maruyama when she praises Wakabayashi's save has the jaw disjointed from the rest of the head. It's a "cameo" featuring a character from Urusei Yatsura, Ryunosuke's father. Also in attendance another character with a design that stands out from the rest, which seems to be Sakurambo, again from Urusei Yatsura. (00:06:07)

Sammo ★

Tsubasa Is Sieged - S1-E14

Trivia: Behind Sanae as she squeals Tsubasa's name before the kick off, someone snuck in a 'cameo appearance' by Yuu Morisawa, the main character of the Creamy Mami anime, perfectly recognizable in her usual attire. (00:14:45)

Sammo ★

An Unfair Enemy - S1-E15

Trivia: Probably as a joke from an animator, there's a pig in attendance in the stadium. It appears in one shot, by Roberto Hongo when Tsubasa's mom calls for a hat-trick. (00:18:30)

Sammo ★

Where Is the Rival? - S1-E5

Trivia: When Sanae starts waving the flag she made for Tsubasa, in the background you can see a couple of grossly disproportional characters most likely drawn as a joke by some animator, and even the Road Runner. (00:14:55)

Sammo ★

Kick-Off for the Future - S1-E3

Trivia: International versions change Roberto's message to his coach at San Paulo FC, adding for some reason that he met a girl he fell in love with. This girl is never referenced nor appears, since, well, she does not exist? Roberto mentions that he met Tsubasa instead, who he wants to bring to greatness. (00:12:40)

Sammo ★