The Guardian Charas are related to the ImaginThey're born out of one's desires, can possess people without their permission, and usually tend to bring a change in hairstyle. Sure, the Charas can't time travel, but that's because they are to Imagin as fairies are to humans. Both of them can also take on other hosts if the conditions are right. Eru has transformed with Amu a few times (sort of like her version of Wing form) and Momotaros has taken over Wataru (of Kiva's) body.
The Shugo charas of persons, who have more than one, will eventually merge into one, or dissappear until only one stays as the character development progressesThe Shugo Charas always reflect, what the believes and dreams of a person are. If two dreams adjust to each other (for example, let's imagine Amu becoming a CHEARLEADING IDOL SINGER! WOOO!) that must have effects on theShugo chara as well. On the other hand, if that person grows up and realizes, that he or she can't really do it all, all "unneeded" charas will go back into their eggshells and eventually dissappear. (Nagehiko's Temari already went back into hers, because Nagehiko knows, that there's no need to be a Yandere/Yamato-Nadeshiko hybrid, when you're a boy). My question: If Amu likes her 4 charas as much, as I think, how will she get over it if at least two of them (I think, she will lose Suu and Miki in any case) suddenly say "You don't need me, you've got another dream" and go POOF?! Shouldn't finding her true dream make her happy? PARADOX anyone?!
The "former King" is Tadase's fatherHe left the family, when Tadase was still a baby, so he could watch Easter's activities. He will play a vital role in causing their downfall.
At some point in the future, Nagihiko's family name changes to Saotome.There's no way he and Alto aren't related.
Yes, but the other SaotomeI mean, he's a crossdresser and one of his Chara Naris essentially turns him into a girl! He HAS to be related to everybody's favorite Gender Bender!
The true purpose of the Humpty Lock and Dumpty Key is to cause InstrumentalityThe locks lowest level ability is to jumpstart Chara Naris, regardless of how long the Chara and bearer have known each other. This could be seen as dissolving the barrier between Chara and bearer. Its second ability is to allow Chara Naris with other peoples Chara. While not perfect (Dia and Eru are much stronger when used by their original bearers) it effectively means fusing with part of another person's SOUL. Finally, when the lock and key are put together, it lets Tadase and Amu see into Ikuto's memories. Taken to its logical extreme, the lock and key will eventually dissolve all the barriers between people, creating a shared consiousness with all souls combining into one. When that happens, clones of Amu will sweep across the world and turn everyone's bodies into Tang.
The first King, Tsukasa, is Tadase from the futureIt has been implied that Amu's chara Dia can facilitate time travel, and, let's face it, Tsukasa looks exactly like an older version of Tadase. So it really doesn't seem like that big a stretch to consider that the helpful but mysterious Tsukasa could be sweet little Tadase all grown up. What purpose he might have for traveling back in time, however, varies from guesser to guesser.
All of Shugo Chara! is just a hallucination of Nobuko Saeki, the fortune tellerNobuko Saeki is the only adult that can see Charas, right? The only other people that normally see charas are children. Nobuko Saeki could be an insane woman who is regularly visited by neighbourhood children (the guardians, Utau and Ikuto). She claims to see little people floating on their shoulders, and the children just humour her by pretending to see them too.
Nagihiko is a MTF transsexualShe is biologically male but thinks of herself as female.
Utau once auditioned for Hello! ProjectBefore the events of the anime (and by extension, the original manga), Utau auditioned for it, hoping it would free her from her commitment to Easter, and she would have been chosen, but Easter found out about it, and ultimately put an end to it, threatening to hurt Ikuto in some way if she tried a stunt like that again. Considering H!P's involvement in the anime, it wouldn't be surprising if that did happen. Oh yeah, she would have still tried to find the Embryo in order to save Ikuto. Above all else, that would still be her first priority.
Yaya is Ahiru reincarnatedThink about it. Overly cheerful, decent yet clumsy ballerina, uses ducks in her attacks... Heck, they even get some Ship Tease with stoic green-haired guys. Okay, they may have some different traits, but reincarnating does that to you.
Tsukasa is actually Laplace no MaThey are both the kings of the no-answers of their universes, and are able to teleport to different places. For example, the final battle in Shugo Chara Doki: It is stated that Tsukasa went to the amusement park before the Guardians, but did he got inside of there if the gates were locked?
Ikuto is a man-whore[[WMG: Pepe will eventually become Hana-chan's guardian character. After Yaya matures a little and her baby brother ages, she will no longer need Pepe. No longer need, Pepe will find another yellow colored magical girl. Hana-chan will become the first princess of the witch world who can access character transformations.