Monty's boss fight is pretty easy and the cutscenes are pretty cool. Monty got shattered in a very cartoonish kind of way if you know what im talking about, but Roxy's death takes the cake with the go-kart-to-the-face hit.

Timestamps:
0:00 Monty's Cutscene
0:35 Filling the Splash Bucket
2:05 Monty dies cutscene
2:37 Dancing on Monty