M-21 ()
M-21 is one of the first one hundred humans that was experimented on by the Union. He is designated as the 21st human in that batch. He was classified as a failed experiment, and took the lowest raking agent position in the Union along with M-24.
Voice Actors
Hisafumi Oda
Japanese
Christopher Hackney
English
Jesse Grimm
German
Kousuke Oonishi
Japanese
Alexandre Maguolo
Portuguese (BR)
Juan Llorca
French
Roberto Molina López
Spanish