Skull and Bull

Skull and Bull (デスおじ Desu Oji) are a pair of major supporting characters and are two of Franchouchou’s first ever fans. After their performance in the first episode, they are continuously seen in the audience of all their future performances.

History
Complete strangers to the idol fandom, they are initially confused and irritated when the announced darkness turns out to be a facade, only to quickly come to love the girls and their work as much as their other interests.

They become Franchouchou's first dedicated fans after their first performance as Death Musume. They start out as Death Metal fans, initially sticking to the girls thinking they are a Death Metal group.

During the concert in Episode 9, they comment that the wide variety of different people who show up at their concerts is what Franchouchou is all about.

Appearance
A couple of guys who dress in stereotypical death metal fashion, one is thin and pale, the other is chubby and pale.

Personalities
Complete strangers to the idol fandom, they are initially confused and irritated when the announced darkness turns out to be a facade, only to quickly come to love the girls and their work as much as their other interests. They become Franchouchou's first dedicated fans after their first performance as Death Musume.

When the metalheads witness Saki's kick towards Takeo, the chubby one says that this is the reason why number 2 is the best in his opinion, and states that it must be nice to be hit by number 2, while blushing, Of course.

They both are, showing concern for Ai when she becomes visibly frightened by the lightning in Episode 7 and by the entire gang in Episode 12.

Trivia

 * It is revealed in “Episode 8” that Death Metal Fan A is a masochist, specifically for Saki.
 * The program does not give their names.
 * In the English dub, Metalhead B speaks with a Birmingham accent not unlike Ozzy Osbourne.
 * Like Policeman A, they both appear in multiple episodes despite having little screen time.
 * The only time the two were not shown together was in "Episode 6" where only Metalhead B is seen taking selfies with the girls in the crowd with Metalhead A nowhere to be found.
 * The only episodes wherein they don’t make appearances in during Franchouchou’s performances those days were in “Episode 3” and “Episode 4”.
 * Granted, they were only absent in the third episode since it being a guerrilla performance meant they had no idea of the event and location.
 * It is revealed in the spin-off manga, Zombie Land Saga Gaiden: The First Zombie, the two are former classmates of Eikichi Hyodo.
 * Funimation's dubbing for season two calls them "Skull and Bull" being a reference to the first seasons of the Power Rangers.

Skull y Bull