The "Penn Zero: Part Time Hero Theme Song" is the opening sequence of the show.
Lyrics[]
Penn, (speaking, season 1 episodes 1–15), Isabella (Penn voice, season 1 episodes 16–20, season 2):
Wherever good is threatened,
Heroes rise to the challenge and always save the day!
...Except when they don't.
And that's when I go to work.
Penn (singing, season 1 episodes 1–15), Alex Duquette (singing, season 1 episodes 16–20, season 2): I zap in two dimensions every day, it's my job. To be a hero, save the world, and make things right.
Kung fu moles, rescue trolls, punch a zombie, score a goal! I'm a robot! I'm a rabbit! I'm a knight!
Penn, (season 1 episodes 1–15), Alex Duquette (season 1 episodes 16–20, season 2): Boone and Sashi always sticking at my side! No villain's gonna stop...
Choir: Penn Zero: Part-Time Hero!
Penn Zero: Part-Time Hero!
Penn & Choir: Penn Zero: Part-Time Hero!
Penn (speaking, season 1 episodes 1–15), Alex (singing, season 1 episodes 16–20, season 2):
Penn Zer--aaugh!
Trivia[]
Many of the worlds that Penn visits appear throughout the theme song.
In The Splishy Splashy Sea • Come Aboard with Me • Training to Win • Wings of Destiny Song • Sometimes We Need a Friend • Build and Backup Now • The Time Table • Everybody Chillax • Why Won't You Turn Green • Its the Best Friend Song • Its The Best Friends Make Up Song • Ginkon Song • Its Not Just Today