* ActorAllusion: Yin dressing up as [[Anime/SailorMoon a sailor scout]] is probably this, considering one of Stephanie Morganstern's most well-known roles.
* FanNickname: Some have given Yuck's nicer personality in "Upstanding Yuck" the name Oliver; also, Yin's evil side in "Gone A Fowl" is sometimes called Eve.
* RelationshipVoiceActor: In the Latin American dub, Yang and Yo are [[WesternAnimation/AvatarTheLastAirbender Aang and Uncle Iroh]], respectively.
* TalkingToHimself: Yang and Yuck are both voiced by Scott [=McCord=], could be justified in that Yuck is half of Yang and it would make sense for them to sound similar. The same with Dave and Coop who are both voiced by Dwayne Hill.