The more you watch anime, the more anime easter eggs you'll start to notice. Some are obvious, and some are subtle enough to escape even the most eagle-eyed anime fan.
The most common type of easter egg is a reference to another series. In many cases, a studio like Kyoto Animation, Madhouse, Shaft or Trigger will include references to their other works - like when Kyuubey of Puella Magi Madoka Magica appears on a sign in Nisemonogatari. Sometimes, the connection isn't the studio, it's the original creator - the manga artists behind Hunter X Hunter and Sailor Moon are an IRL married couple, so it's not surprising to find crossovers. Some references don't have a seemingly obvious connection - in fact, some anime even reference Western media, like when JJ Leroy from Yuri!!! on ICE appears dressed like Eric Cartman. Not everything is a crossover, though - one particularly fun One Piece easter egg involves a character named Pandaman who appears in every episode of the lengthy series.
Which of these easter eggs do you find delightful? Be sure to vote up your favorites.
In Hunter x Hunter, Greed Island is a video game that transports its players to a dangerous world, where they can only be released by using a special card or by losing their life. Here, it's depicted as a harmless arcade game, but it could imply something more sinister on the horizon.
Naoko Takeuchi and Yoshihiro Togashi, the respective artists behind Sailor Moon and Hunter X Hunter, are actually a married couple in real life, making this crossover particularly adorable.