Christian is the main and final antagonist the player comes across in the map The Final Stand. Along with Depression, it is optional to fight Christian.

In the story, Christian committed an "experiment" on how fast human emotions change. His only victim was Fabysk, the creator of Project 115 and Project 115 - A New Threat.

In game, Christian is the hardest enemy to fight. The battle takes longer since the player has to Exo-Jump across platforms to evade attacks Christian performs.

After defeating Christian, the mysterious voice, which is revealed to be Fabysk, told Christian that he shouldn't pass on his terrible feelings that he has been growing up with. It becomes clear that Christian suffered a bad childhood and he passed on his nightmares to other people.