Danganronpa Triviaさんのイラストまとめ

The creators wanted to make an antagonist that, unlike the ones before, is completely unlikable.

Hence why Monaca Towa was made.

Junko's obsession with despair originates from constant boredom due to her analytical skills.
This is very similar to Izuru Kamukura.

The Logic Dive sections in DR2 are a reference to the Detective Conan series.
Hajime's voice actress also voices Conan Edogawa.

JAP: "Sore wa chigau yo!"
ENG: "No, that's wrong!"
GER: "Nein, das ist falsch!"
CHI: "Zhè shì cuòwù de!"

Ryoma Hoshi is voiced by Akio Otsuka

He is also in Metal Gear, Ghost in the Shell, One Piece and Fate/Zero.

Tenko Chabashira is voiced by Sora Tokui

She is also in Love Live!, Senran Kagura, My Little Pony and The Guided Fate Paradox.

Kaede Akamatsu is voiced by Sayaka Kanda

She is also in Frozen, Sword Art Online and Good Luck Girl!

She also plays Junko in DR The Stage.

Miu Iruma was designed to be a character that would be unpopular with the fans.

According to a poll she is the 4th most popular V3 student.

Monokuma's Japanese voice actress, Nobuyo Oyama, was replaced by Tarako Isono in DR3 due to Oyama unfortunetly suffering from dementia.

Number 2:

Nagito Komaeda