The Past Unmasked

The Past Unmasked is the boss fight and the final level of Cortex Island (1996) and the thirty-fourth and the final main level of Crash Bandicoot 4: It's About Time.

Overview
Crash and Coco confront Doctor Neo Cortex for the second time during the game. Cortex has imprisoned his past self and enslaved the Quantum Masks to use them and Shoot-o-Matics against the bandicoots. The battle has five phases and in each phase, Crash or Coco need to use body slam to destroy the Shoot-o-Matics while avoid electric waves and effects of the Quantum Masks. When all Shoot-o-Matics have been destroyed, Cortex sends Lab Assistants to attack, the player must spin them towards Cortex.

After Cortex is defeated for the second time, few crates falls in his head and he passes out. Crash frees the past Cortex who goes to his lab and then starts, Crash rests on a eject button which Cortex Vortex break down, with Coco realizing this being the reason why the experiment failed in the first place. Akano drops on the Cortex back and the other Quantum Masks send Cortex to the end of universe. Crash celebrates the victory dancing. Cortex ends up in the end of the universe, where he is a little bit sad for being alone, but then is happy for getting peace and quiet. Dingodile reopens Dingo's Diner, while in N. Sanity Island, Crash, Coco and Tawna are playing video games.

Trivia

 * In this final boss battle, Cortex using all of the Quantum Masks to destroy Crash and Coco resembles The Wrath of Cortex final boss battle where Crunch and Cortex are using all of the Elementals to destroy Crash.