Zillion: Burning Night (1988)

Nobita and his friends find a portal to a mysterious resort filled with metal buildings. They soon discover that the person who opened the portal for them has an ulterior motive.

As Nobita, Gian, Shizuka, and Suneo are making their own space movie, a fleeing bug-sized alien president makes his way to Earth, and needs the help of the kids and Doraemon to stop an oppressive dictatorship threatening his democracy.

Doraemon and his friends have to rescue the people of Birdopia from the wrongdoing of vengeful former bird troopers before they unleash a wicked ancient dragon.

Ash and his two friends Iris and Cilan help a Keldeo battle against a powerful Dragon-type Pokémon named Kyurem its his test to become a Sacred Swordsman.

When the Ministry of Education goes back on its promise to keep Ooarai Girls Academy open, the task of saving the five-mile-long Academy Ship from the wreckers falls to Miho and her barely-seasoned tankery team. However, things go off track almost immediately. While the Oorai tank crew may have won the high school tournament, they’re now facing a larger and more experienced university team, and if they fail, their armored vehicles will be forfeit! Will they be swapping their tanks for the memories? It’s possible, but winning a tank battle is all about tactics and teamwork, and the fledgling Ooarai students have more friends and allies than anyone suspects.

Ash, Pikachu, and their friends come to a desert city by the sea. Here they meet the Mythical Pokémon Hoopa, which has the ability to summon things—including people and Pokémon—through its magic rings. After a scary incident, they learn of a story about a brave hero who stopped the rampage of a terrifying Pokémon long ago. Now, the threat that has been bottled up for years is in danger of breaking loose again.

When the mysterious Shiriri turns his parents into children, Shin-chan must trek across Japan to help return them to adult form.

A group of five Genesect have invaded the big city and pose a threat to the supply of electricity, which attracts the attention of the legendary Pokémon Mewtwo. Satoshi, Pikachu and his friends must come to the rescue when the powerful leader, a red Genesect, faces Mewtwo.

In this OVA, Goku and his friends pose questions for the viewers about the Dragon Ball series.

In the underground Diamond Domain, where many Carbink live, the Mythical Pokémon Diancie serves as ruler. The Heart Diamond that sustains the land is beginning to fall apart, and Diancie is not yet strong enough to create a new one. While seeking help from the Legendary Pokémon Xerneas, Diancie encounters a group of thieves who want to take control of its diamond-producing power–and who awaken the Legendary Pokémon Yveltal from its cocoon in the process! Can Ash and his friends help Diancie discover its true power, stop Yveltal’s rampage, and save the Diamond Domain?