Lucien looks down grimly for a moment before responding, eyes still not meeting Desmond's. "Because that beast was once contained within the half-living corpse of my brother. Let me tell you the story, Desmond. Once I was wronged by my brother and my former home, sold to people who tortured me and tested every limit of mine. I escaped and trained with a group called the Tribals - hunters who sought to destroy every last Infected. I learned their skill under the guise of joining their cause. And for a while I wanted to - but hatred always brought me back to my original goal. One night I tracked down one of the strongest Infected abominations, a worshipped being dubbed the "angel" of the people. So I devoured it and took its power for my own. Then I... I came back to my home. I slaughtered the entire settlement. Devoured every man, woman and child there was. Until I came to my brother's home. I cut down his wife with ease. I.... still remember her surprise as my blade flicked across her throat. So easy, how human skin tears... We fought. It ended with me standing over him amidst the flames of his home. I soon heard a cry as I prepared to end my brother's life - his infant child. And that is when I felt the weight of my vengeance and realized what I had done out of rage. So I made a blood promise to my dying brother. I would take his son and teach him all there is - then I would let him decide my fate. Decades after I came across something. The Abbatial, a church that worships the Infected, had created a new type of weapon. A vessel of sorts for Infected, where they would knit and fuse flesh to create a host for an abomination. I found a record of a recent experiment of theirs where they converted someone into this kind of body, this Godvessel of sorts, from the outside in. They hardened his flesh but kept the man inside of it just barely alive. They found that man in Auburn Steppes, nary a breath of life in him. They found my brother and turned him into a monster. Funny how hatred and vengeance have a tendency to breed our own demons. Because the Abbatial sent this new assassin of theirs after me whilst I was travelling with Alister, who did not know his father had been turned into a monstrosity. So I did what I should have done. I ended his suffering, but I could not bring myself to devour him. Not after hurting him so much already. Now the beast that had consumed him resides in you."