80% Meme Wallpaper Edition

I just love these characters so much, I just had to make a wallpaper for all 20 of them. If you still haven't answered the meme, you can view them here:

Girl version: [link]
Boy version: [link]

SPOILER WARNING!!!
Key answer below...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
In order of arrangement (left to right, top to bottom:
...
Finn the Human from Adventure Time
Elite Four Caitlin from Pokemon B/W/B2/W2
Wind Mage Vaati from The Legend of Zelda: The Minish Cap
Maka Albarn from Soul Eater
Papa Panda from Panda Go Panda
Hermione Granger from Harry Potter (duh)
Susano from Okami and Okamiden
Misa Amane from Death Note
Takashi Natsume from Natsume Yuujinchou
Aoi Asahina from Danganronpa
Amaterasu from Okami
Death The Kid from Soul Eater
Sakura Kinomoto from Cardcaptor Sakura
Aqua Admin Matt from Pokemon R/S/E
Sunako Nakahara from Yamato Nadeshiko Shichi Henge
Nekomaru Nidai from Super Danganronpa 2
Angelica Santibañez from Marimar
Harry Potter from Harry Potter (DUH!)
Parasitic Armored Arachnid Gohma from The Legend of Zelda: Ocarina of Time
Eikichi Onizuka from Great Teacher Onizuka

***
Key answer ends here...
***