For anyone who does not care to take the time to read his bio, Sinfjotli's motives for the grail and the reason for his assholeishness can be sumarized thusly https://www.youtube.com/watch?v=_bZKEhgieoc

{Video Guide: Kirk = Sigurd}

Now combine these two clips, and you have essentially read his entire bio 
https://www.youtube.com/watch?v=_bZKEhgieoc
https://www.youtube.com/watch?v=qmJ2GVOEVFI

And that is what we call a formula. 
Feel free to include any scene from the 1985 film Teen Wolf that you wish.