I found some polls on the Danganronpa characters!
It ranks (16-1) the most popular out of the games. Though I haven't been able to find one for Danganronpa 1: Trigger Happy Havoc, I found Super Danganronpa 2: Goodbye Despair and New Danganronpa V3.
SDR2
16.Nekomaru Nidai
15.Akane Owari
14.Teruteru Hanamura
13.Byakuya Twogami
12.Peko Pekoyama
11.Sonia Nevermind
10.Mahiru Koizumi
9.Hiyoko Saionji
8.Fuyuhiko Kuzuryuu
7.Kazuichi Souda
6.Mikan Tsumiki
5.Hajime Hinata
4.Ibuki Mioda
3.Gundham Tanaka
2.Nagito Komaeda
1.Chiaki Nanami
NDRV3:
16.Tsumugi Shirogane
15.Ryoma Hoshi
14.Angie Yonaga
13.Korekiyo Shinguji
12.Gonta Gokuhara
11.Kaito Momota
10.Kirumi Tojo
9.Maki Harukawa
8.Tenko Chabashira
7.Kiibo
6.Rantarou Amami
5.Himiko Yumeno
4.Miu Iruma
3.Kaede Akamatsu
2.Ouma Kokichi
1.Shuichi Saihara
