Series Finale is the final two episodes of Team Four Star’s Hellsing Ultimate Abridged. Part 1 was streamed live on their Twitch channel on November 24, 2018, and uploaded to YouTube shortly after. Part 2 was streamed live on Twitch on December 8, 2018 and then immediately uploaded to YouTube afterwards.
Both parts were preceded by a Hellsing Marathon of the other episodes. Both Part 1 and Part 2 were briefly taken down on YouTube, but they're both available on their Twitch channel.