[Spoiler thread] Post here a video/story of your favorite final boss fight in tv series

[Noctosphere]

So, here is a thread containing tons of possible spoiler about any tv series
If you haven't finished a serie and don't want to bt spoiled, avoir this thread


So, here's mine
In Supernatural, Lucifer has been the main big bad of pretty much the whole series
In Season 1-4, he was the bigger bad, meaning he was even bigger threat than the current big bad
For exemple, in season 1-2, Azazel was a fanatic demon in quest to resurect Lucifer
Season 3-4, Lilith, the first demon, continued Azazel's job after his death
And finally, in Season 5, Lucifer got resurected and launched the apocalyps with the help of his 4 horsemen
In the end, Lucifer got trapped in a cage deep in Hell where he got banished...

Even if Supernatural was supposed to end there, it was such a succes that other writer decided to continue the story
And Lucifer came back with it...
In Season 7 and season 11, Lucifer came back as a secondary big bad
In Season 12 and 13, he was again the main big bad
But in Season 13, he finally died by the hand of Dean who said Yes to Michael
Here's how it ended

 

[Noctosphere]

What about you?
Do you have a favorite big bad which the death/defeat was chilling for you?