This is a list of Extras from the Manga series - World Trigger
See also:
Question Corner
Popularity Poll
Continuous
Character Profiles
Volume 1 - Chapter 7
Volume 2 - Chapter 16
Volume 3 - Chapter 25
Volume 4 - Chapter 34
Volume 5 - Chapter 43
Squad Profile
Arashiyama Squad - Chapter 6
HQ Top Brass - Chapter 10
Miwa Squad - Chapter 14
Tamakoma First - Chapter 23
Away Team - Chapter 24
Kazama Squad - Chapter 27
Tachikawa Squad - Chapter 29
Azuma Squad - Chapter 45
Kako Squad - Chapter 81
HQ Top Brass part 1 - Chapter 84
HQ Top Brass part 2 - Chapter 86
Character Portfolio
Osamu Mikumo - Chapter 1
The Portfolio includes his biography, along with the preliminary sketches used for the serialization meeting and The Author's Comments.
Yūma Kuga - Chapter 2
The Portfolio includes his biography (minus birthday and bloodtype), along with the preliminary sketches used for the serialization meeting and The Author's Comments.