I’ve sorted the characters according to their introductory affiliation.
Anteiku/Re Affiliates
Kaneki Ken – centipede; was there any doubt?
Nagachika Hideyoshi – beaver
Yoshimura Kuzen – golden retriever
Kamishiro Rize – unicorn. fight me.
Kirishima Touka – angora rabbit
Koma Enji – gorilla
Irimi Kaya – a doberman, obviously
Yomo Renji – a majestic raven
Kosaka Yoriko – firefly
Hinami Feuguchi – butterfly
Nishiki Nishio – serpent
Nishino Kimi – dolphin
Tsukiyama Family
Tsukiyama Shuu – Zebra
Karren von Rosewald – thoroughbred horse
Matsumae – jaguar
Mirumo – platypus
Chie Hori – raccoon
Clowns
Uta – cat
Itori – red panda
Hoito Roma – crocodile
Nimura Furuta – rat. THEY SMART AND I LIKE THEM.
Rio/Shikorae – otter
Nico – parrot
Donato Porpora – coyote
Aogiri Tree
Kirishima Ayato – jackrabbit
Yamori – wolverine
Tatara – Falcon.
Yoshimura Eto – Snowy Owl.
Noro – jellyfish
Miza Kusakari – goat
Naki -sheep
Hakatori – squirrel
Banjou Kazuichi – alpaca
CCG
Amon Koutarou – gray wolf
Takizawa Seidou – jackal
Mado Akira – arctic wolf
Houji Kousuke – bison
Mado Kureo – hyena
Marude Itsuki – pigeon
Washuu Yoshitoki – camel
Washuu Matsuri – llama
Washuu Tsuneyoshi – margay
Kuriowa Takeomi – panda
Kuriowa Iwao – grizzly bear
Aura Kiyoko – polar bear
Tanakamaru Mougan – black bear
Shinohara Yukinori – buffalo
Itou Kuramoto – fox
Kurona Yasuhisa – poison dart frog
Hajime Hazuki – armadillo
Mayazumi – mouse
Arima Squad
Ihei Hairu – koala
Arima Kishou – great white shark
Ui Koori – praying mantis
Take Hirako – kangaroo
Arima Yusa – mongoose
Ihei Shio – rainbow fish
Souza Rikai – ladybug
Suzuya Squad
Suzuya Juuzou – orca
Keijin Nakarai – songbird
Hanbee Abara – seal
Miyuki Mikage – narwhal
Mizurou Tamaki – cow
Quinx Squad
Yonebayashi Saiko – pallas cat
Shirazu Ginshi – tiger
Urie Kuki – lion
Mutsuki Tooru – caracal
Hsaio Ching-Li – eel
Aura Shinsanpei – lemming
Higemaru Touma – manta ray
Mercy and Magic 