Full Metal Panic! Wiki

Nguyen Bien Bo (Nguyễn Biên Bội/グエン・ビエン・ボー, Guen bien bō) was a traiterous AS pilot and a mercenary for Mithirl's SRT. Along with John Danigan, he betrayed the organization for a large sum of money (5 millions dollars according to the manga) and helped Gauron escape by killing Gail Mcallen. He is killed by Kurz Weber with the aid of Melissa Mao.