Henry is seen reading a comic strip called "Opus the Peahen" drawn by Berkeley Breathed. Breathed is a real, Pulitzer Prize-winning cartoonist, whose real strips featuring the character Opus the Penguin ran (under several different titles) from the early 1980s until 2008. The presence of this strip in the Alternate Universe highlights several differences between "our" world and theirs: in ours, the Opus character is a male penguin, while in theirs, she is a female peahen; in ours, Breathed no longer draws a comic strip, while in theirs, he apparently still does. The "peahen" strip was drawn especially for the show by Breathed himself.