If you watch Callie and Marie in the studio for long enough...

[RotomGuy]

...they wave at you! They've acknowledged their fans a lot more than most modern celebrities!

It's also really cool to watch them do behind the scenes stuff in there. These two have so much character!

 

[Trieste Sp]

That's a cool easter egg. Nice find.

 

[Jet]

Cool can't wait to get splatoon later today

 

[mario123007]

...they wave at you! They've acknowledged their fans a lot more than most modern celebrities!

It's also really cool to watch them do behind the scenes stuff in there. These two have so much character!

Any video proof? I want see it! (Yes, I don't have Splatoon yet)

 

[Sol64]

Proooooof.

I've done this as well =]

 

[Reila]

They are so cute. To think I didn't like them at first (mostly because I was 'afraid' of people creeping on them, fortunately it hasn't happened that much yet).

 

[Zero Revolution]

That's a nice addition. Nintendo always adds some cool extra animations to their games, so I'm not surprised.