99% of the characters are post-modernized from Eureka Seven, which they did the manga to.
Ganta is Renton.
Shiro is Anemone.
Swordgirl (forget her name) is Talho.
Kid who stole the candy is MoonDoggie.
Warden and Crow seem to be Holland.
New girl is Eureka.
Doctor Girl is Doctor Girl (you know what the fuck I`m talking about). Et cetera... Young Ganta is that stupid kid Maurice? Or was it the other one...