Captured Spirits

Captured Spirits
Captured Spirits show similarities to Ultra Beasts in Generation VII.

Captured Spirits are spirits that have escaped from a cursed realm and have captured humans with great power. The starter you chose's Final evolution/ Mega Evolution plays a big role in this plot however so do Mega Evolutions overall.

Arceus, the God of Pokèmon origanally trapped these used-to-be spirits into the cursed realm however a Pokèmon strong enough to open the cursed realm and free the spirits.

One of the Captured Spirits is a spirit that has captured Nintendo Superstar, the guy in the red cap, also known as CB Jumper/Jumpario.

Another Captured Spirit is a spirit that has captured the main hero from The Legend of Zelda, known as CB Swordfighter/ Linksword.