Many parts of the series are inspired by the anime FLCL (2000) , most of them being animation style. Occasionally, these references actually involve story and character points. The most repeated example is Beast Boy's love of mopeds - a Vespa motor scooter (also used here in "Mad Mod") belongs to Haruhara Haruko, the female lead in FLCL
I was trying to pay her a compliment.
Raven: Then why does it still sound like an insult?
The title credits are sung bi-lingualy, some episodes being in Puffy's native Japanese, others being in English.
English, Spanish, French