[s2e11] Brotherhood Of The Damned -

Armed with immense power, Finn (Vincent) traps the spirits of his brothers—Klaus, Elijah, and Kol—in a "hunt room" or prison world.

: Flashbacks reveal that Marcel turned his dying comrades into vampires to save them, cementing his role as a leader who rules through loyalty rather than fear. [S2E11] Brotherhood of the Damned

While dealing with a life-threatening werewolf bite and a compound full of starving vampires, Marcel experiences vivid hallucinations of his time as a soldier in 1918. Armed with immense power, Finn (Vincent) traps the