Crash Bash: Adventure Part 6: Papu Pummel (Boss 1)
9After getting all 4 of Warp Room 1's Trophies, you can fight this game's first boss.
In Papu Pummel, you have a Crate Crush-styled boss fight against a huge Papu Papu.
His attacks involve pounding the field with his staff to force its squares to flip over and heat up in an effort to attack you. He will also summon minions to fight you... which are just smaller, red pants Crashes.
After this, he decides to taunt you by laughing at you. This will drop his shield, allowing you to hit him with a crate. Lather, rinse, repeat.
This keeps going until he has very little health left, where he tries to attack on more time, but it causes a huge stone block to crush him, netting you the win.
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This will allow you to go to Warp Room 2. This changes you from a jungle ruins theme to a frozen theme. New variants of the first four game types and a new boss show up, though there is also a new type right next to the boss level.