The "Invader Zim Theme Song" is the opening title sequence for the animated television series created by Jhonen Vasquez. Composed by Kevin Manthei, the theme is known for its aggressive, driving rock rhythm, chaotic energy, and sinister yet playful tone, which perfectly captures the show's unique blend of dark humor and science fiction. It features a memorable, repetitive melody played on a distorted electric guitar, becoming instantly recognizable to fans.
The "Irken March" is the distinctive military-themed main title theme from the animated series Invader Zim, composed by Kevin Manthei. It features a pompous, orchestral style that perfectly captures the absurdly sinister yet comedic tone of the series, representing the bumbling yet menacing Irken Empire.
