Naegi: Sloth

Togami: Greed

Fukawa: Envy

Yasuhiro: Is too cowardly to have one

Aoi: Gluttony

Kyouko: Greed

Sayaka: Wrath

Mukuro: Wrath

Leon: Wrath (couldn't think either)

Chihiro: Sloth

Mondo: Wrath

Ishimaru: Sloth

Yamada: Servant Of Evil

Celestia: Pride

Junko: Pride

Hajime: Wrath

Fuyuhiko: Wrath

Akane: Gluttony.

Souda: Is too cowardly to have one

Sonia: Sloth

Twogami: Gluttony

Teruteru: Lust

Mahiru: Pride

Peko: Servant of Evil

Ibuki: Sloth

Hiyoko: Pride

Mikan: Sloth

Nekomaru: Wrath

Gundham: Wrath

Nagito: Servant of Evil

Chiaki: Sloth.