Coolest attacks done by Bosses?

Pretty much just the title. What are attacks from bosses that really wowed you in terms either just incredible flashy visuals or in a more gameplay shifting sense.

Kingdom Hearts is probably the king of giving bosses stupidly cool moves. Look no further then Xenmas where most of his attacks are so over the top and amazing such as throwing sky scrapers and just throwing you out of his dragon. But of course his coolest attack is THE LASER DOME.

Another example would be Spamton Neo's special attack from Deltarune Ch 2. Just because of how intimidating it is to see his towering body cover the right side of the screen.