Rarity: ★
54歳。ロスガル族。旧ボズヤ王都ボズヤ出身。
ボズヤ・レジスタンスのリーダー。
Race: Hrothgar
Age: 54
Birthplace: Bozja
ガレマール帝国からボズヤ管区を解放し独立国家の樹立を目指している。
医学生を経て帝国軍に徴用される。軍医として従軍。様々な勲功を上げ、帝国の名誉市民として市民権を得た。結婚し子をもうけるが、反乱鎮圧のための遠征中にシタデル・ボズヤ蒸発事変が発生、妻子を失う。
事変後、帝国を見限り仲間と共に軍を脱走。地下での潜伏活動中にレジスタンスに参加した。
従軍していた際は、自分の人生について、これはこれで悪くないという印象を持っていたが、事変後、それは真逆となった。帝国に対する恨みと憎しみは誰よりも強い。
だが、知性派でもあるバイシャーエンはそうした負の感情を極力抑え込もうとしている。感情だけでは負の連鎖が収まらないことを歴史から学んでいたためだ。
グンヒルドの剣（レジスタンス・ウェポン）を復刻し、女王の親衛隊を新生したバイシャーエンはついに第IV軍団をボズヤから追い出すために反撃の火蓋を切った……。
A native of Bozja and leader of his people's resistance movement, Bajsaljen works to free his conquered nation from the tyranny of the Garlean Empire and reestablish the region as an independent state.
In his youth, Bajsaljen studied the medicinal sciences. His academic achievements saw him conscripted into the imperial army to serve as a medic, a career which in turn earned him the rights of citizenship. Such status allowed him the opportunity to marry and sire a child, but his happiness would be short-lived─while the Hrothgar was called away on campaign to suppress an uprising, his family perished in the now-infamous Bozja incident.
A devastated Bajsaljen later deserted the Empire, fleeing his unit along with several comrades, and it was not long until their underground activities brought them into contact with the Resistance.
During his time in the imperial army, he had not been one to dwell upon the cruelties of life. The events of the disaster, however, left him a changed man─few can match the hatred and bitterness he now feels towards his former masters.
Yet even so, Bajsaljen strives to master his emotions, for history has taught him that anger alone will not suffice to deliver his people the freedom they desire. Instead, he focuses his energies upon the newly reformed Gunnhildr's Blades and their sacred weapons, as he leads the fight to drive the IVth Imperial Legion from his beloved homeland.