Pokémon Strange Journeys

Pokémon Strange Journeys is an American-British-Japanese animated television series produced by Satsuki Film Company and distributed by 1happycats Productions. The series first aired on January 26, 2015, and ended on August 11, 2017.

Movies
All three movies in the series appear to be a crossover of some sort.

The Rise of Dr. Eggman
The first movie was released on August 7, 2015, just after the first season ended. It involves Dr. Eggman, having captured Ash's friends after they left, planning to take over the entire Pokémon universe, and it's up to Ash and his friends to stop him.

Adventures in Minecraft
The second movie was released on June 17, 2016, after the second season ended. It is a crossover with Minecraft.

Mystery of the Missing Kid
The third and final movie was released on May 30, 2017, after the fourth season ended. It is a crossover with My Neighbor Totoro.

Reception
The show received mixed-to-negative reviews, mostly due to the incredibly juvenile writing and personalities of the characters (Misty and May in the first season, and later Mash, being some of the worst offenders), as well as due to it barely focusing on any Pokémon, along with the many blatant references. Some even went as far as to call it "the Teen Titans GO! of the Pokémon franchise".

Trivia

 * This is Satsuki Film Company's first production to be distributed by 1happycats Productions, who would end up purchasing the former in 2018.