- Happiness references a lot of things from the previous series, such as in episode 3, where the Angela Cycle makes a return in one scene.
- In episode 9, one particular scene during the beginning has a shout out to the Alinamin V Energy Drink. All it needs now is some Arnold Schwarzenegger cameo.
- Luna pulled a Heidi, Girl of the Alps reference in episode 15 after casting her Jewel Magic to tame the goats down.
- Episode 19: a model kit seen in Jasper's room resembles that of the Sazabi Gunpla.
- In The Stinger of episode 31, Sapphie comes out of the TV screen in the style of The Ring.
- In a truly egregious case of Parental Bonus, in episode 34 (heh), Lapis is seen sitting in a straw chair in a lurid position that evokes the poster for the erotic film Emmanuelle.
- There's another scene where Angela is dressed like a ghostbuster.
- In episode 42, one of the athletes is Johnny Bravo with pink hair, and he makes similar pained sounds when hit.
- The end of the series seems to be taken directly from the first season's since they both involve an outdoor feast.
Shout Out / Jewelpet Happiness