Favourite DLC boss?

I know it's all about Nightreign at the moment, but I recently started my second play through of the DLC with a no summoning rule so I can actually learn the bosses, I'm so much more into it than the first play through where I summoned on pretty much every boss.

So far I've only done Rellana and the Dancing Lion, and I'm amazed with how good the fights are.

Dancing Lion might be one of my favourite bosses of the entire From catalogue. I love the design, so scary and such a cool idea for a boss. I love the fluid movement and wide move variety, I love the music and how dramatic but beautiful it is, and hoe bombastic it gets when he first gets lightning, then how it adjusts with each new element. I love how he has some absolute random moves like the one that heals him when you heal, I didn't even notice it until like my 20th attempt (yes I'm not amazing at the game).

Whats your favourite DLC boss?