First Lieutenant Wilibald Koenig commands the 3rd Company of the V601 battalion within the Imperial military, operating under the direct command of Tanya Degurechaff. He possesses a tall stature, sharp facial features including a sharp chin and small eyes, and wears his long dark brown hair secured in a low ponytail. In non-combat settings, he wears the standard Imperial uniform, switching to specialized battle gear during deployments. Koenig is a reserved individual who executes orders, particularly those from Degurechaff, without hesitation or doubt. He demonstrates loyalty and maintains a supportive, trusting attitude towards his fellow soldiers. His extensive combat experience encompasses operations against Dacia, missions within Osfjord, campaigns on the Western Front against the Francois Republic, deployments in North Africa, and actions on the Eastern Front confronting the Russy Federation. This service continued after the V601 battalion's integration into the Kampfgruppe Salamander command structure. Within the crossover setting, Koenig interacts with characters from other realities. He addresses Aqua when she refers to him as "horse face," correcting her remark. He observes interactions involving Naofumi Iwatani ("Shield"), including an incident where Naofumi protects companions during a baseball game. Koenig participates in organized school activities like dodgeball without objection when placed on the same team as Naofumi. His combat equipment includes the standard-issue Elinium Type 97 ‘Mobile Assault’ Operation Orb, a rifle, and standard Imperial flying gear.