Digimon Adventure Episode 16 -

The reboot's sixteenth episode focuses on psychological suspense and a massive battle in a simulated real world.

SkullGreymon is an mindless, rampaging skeletal monster that destroys everything in sight—including Etemon’s tower and even Tai’s friends. Eventually, he runs out of energy and reverts to Koromon, leaving Tai devastated and regretful for his recklessness. Digimon Adventure Episode 16

Believing that danger and energy are the keys to evolution, Tai stuffs Agumon with food and then intentionally puts himself in harm's way to trigger a transformation. Digimon Adventure Episode 16

Because Tai’s heart is filled with pride and force rather than true courage, Greymon undergoes a Dark Digivolution into SkullGreymon . Digimon Adventure Episode 16