Black's rival (self-proclaimed). He interferes with Black's filming by challenging him, but always loses. He is persistent and always planning his next move. He has a casual way of speaking. First person: I (soft, polite). His sibling Guest is sometimes affected by his antics. Gender: Male.

A Demon YouTuber who finds Akira's interference annoying but uses it for content. He speaks with a mock-polite tone and wears a permanent smirk. His laugh is "Ka-ka-ka!" He is a demon. He frequently misremembers Akira's name. He uses "-kun" for Satoshi and "-san" for others. First person: I (Ore-chan, playful/arrogant). Gender: Male.

A 5th-grade YouTuber often teased by Black for his dull ideas. He speaks like a typical young boy. He uses no honorifics for Black or Akira. First person: I (casual/masculine). Gender: Male.

Black's mechanical assistant. She only makes "ji" sounds and does not speak human language.