It’s a "catchy tune" that manages to be both earworm-heavy and conceptually deep. It doesn't just provide background noise; it acts as a character study in musical form. For fans of the series, it is the definitive anthem of the "murderous cube" business. Experience the chaotic energy of the official theme here: Internecion Cube | OST - IC-0n's Theme A Liam Vickers Animation YouTube• Aug 15, 2020 IC-0n's Theme A | Internecion Cube Wiki | Fandom
A blend of "wacky electronic nonsense" and upbeat techno with a sinister undertone.
What makes "IC-0n's Theme A" so memorable is its duality. While many tracks in the Internecion Cube OST lean into more somber or mysterious tones—like the melancholic Kirie's Theme A —IC-0n's theme is an explosion of personality.
Unlike most of the series' soundtrack, this track features vocals from IC-0n’s voice actor, Katie Hood. The "lyrics" are primarily rhythmic, melodic "la-la-las" and incessant laughter. This choice is brilliant; it gives the impression of a child-like innocence that is deeply unsettling when paired with the character's god-like destructive powers.