Solis: Cross of Goku (DBZ), Naruto, Luffy (One Piece), Natsu (Fairy Tail) and Gintoki (Gintama) [Basically shonen heroes lol]
Sakura: Rena Ryugu from Higurashi, in both her personalities, albeit not insane. Light personality could also be Nagisa.
Max: Shinpachi from Gintama, being the straight man of the five.
Niklas: Katsura from Gintama along with Tomoya from Clannad and Gray from Fairy Tail (without stripping habit lol)
Rena: Kagura from Gintama combined with Son Goku from the Saiyuki anime.
Sakura: Rena Ryugu from Higurashi, in both her personalities, albeit not insane. Light personality could also be Nagisa.
Max: Shinpachi from Gintama, being the straight man of the five.
Niklas: Katsura from Gintama along with Tomoya from Clannad and Gray from Fairy Tail (without stripping habit lol)
Rena: Kagura from Gintama combined with Son Goku from the Saiyuki anime.