X115

"Its a serum, Generaloberst Richtofen. And I call it X115."

- Dr. Schultz to Heinrich Richtofen

The X115 serum is a biological "weapon" created by Black Ice medical director Dr. Wilhelm Schultz four years after his recruitment into the black operations group. Before its completion, the serum was merely a concept thought out by Dr. Schultz as means of completely disrupting Allied attacks by causing rage amongst their military forces.

Effects
Dr. Schultz revealed that the purpose of the serum was to not kill whomever was affected by it, but rather induce very aggressive behaviour such as uncontrollable rage and zero tolerance for pain, a new form of "deadly painkillers" as joked about. Though viewed it as a flaw, an affected person can pass on the serum's effects to others through their saliva, if it makes contact with their blood stream. However, Dr. Schultz has attempted to workaround this flaw, but to no avail.

Upon its demonstration at the Iron Sky Facility, Dr. Schultz explains that with this serum, Nazi Germany could unleash this on the forces of the Allied Powers and "they'll be torn apart from the inside". Though, they would need to deal with the infected themselves afterwards.

Uses
The serum has been first used at the Iron Sky Facility, Black Ice's main headquarters, where Dr. Schultz demonstrated its effects to Heinrich Richtofen using German civilians as test subjects, though they had escaped and eventually overran the facility, causing Oberst Peter Mathias Müller to secure the facility with the help of Dr. Schultz, Ernst Von Schnee and Ilse Kissling.

The serum was then used on the Strategic Allied Forces at their secret outpost in the UK where Black Ice Specialists infiltrated and unleashed the serum into patients in the medical section of the outpost.

Trivia

 * The X115 serum is named after Element 115.
 * Originally, Dr. Schultz was going to name it "GD-935", a reference to both Group 935 and Division 9.
 * Furthermore, the X115 serum is also based on the "Rage Virus" from the film 28 Days Later.