Trouble Brewing

Trouble Brewing (あやしいじっけんしつ lit. Suspicious Laboratory in Japanese) is the boss fight and the final story level of Tranquility Falls and the thirteenth main level of Crash Bandicoot 4: It's About Time.

Overview
Crash and Coco confront Doctor Nitrus Brio, The battle starts when he throw his beakers to hit the player and then he throw his beakers to free his jellies. Just like in the first Crash Bandicoot game, the player must jump or silde into those jellies to hit N. Brio until he transforms into a hulking monstrosity and the player must use Akano to spin him out the platform and him falls. After that N. Brio is the defeated him transforms into a pterodactyl to scatter N. Verted Gems and Bumpa Berries. But after him tranforms into a pterodactyl, his cloaca drops an egg and Coco is shocked with this, Crash gets the egg and them get out of there. After winning this boss fight, the player unlocks the N. Verted Mode.

Trivia

 * This N. Brio boss fight, he throwing his beakers to free his jellies and then drinking his potions to transform into a monster are a reference from the first N. Brio boss battle in the first game.