Prequel to the Nintendo Wii U game Star Fox Zero.

This is an animated cartoon that was released inside the game Pok&eacute;mon Channel. 
A half-hour long anime show, broken into five short segments, featuring the Pichu Brothers. Meowth throws a party that the Pichu brothers and their friends are not invited to. After a series of events, they find out they were invited, but their invitations were simply delivered late. They go to Meowth's Party and hear him sing. The series has a total of five episodes, each on its own channel. 
(Source: Wikipedia)

The Pok&eacute;dans team's adventure begins one day when a boy, who has transformed from a human into a Pocchama (Piplup) creature in the world where Pok&eacute;mon live, meets a Hikozaru (Chimchar) creature. The team joins a Juptile (Grovyle) and go to the "Lost Continent" to save the world with the "Time Gears."
 
(Source: Anime News Network)

Based on Nintendo DS game; Pok&eacute;mon Mystery Dungeon 2: Time &amp; Darkness. 
(Source: AniDB)

A human wakes up one day to discover that he has become a Squirtle in a world filled with natural disasters, where he meets Charmander and Chikorita of Team Go-Getters, a Pokemon rescue team. Squirtle joins Team Go-Getters for the task of saving Pichu's Brother Pikachu from Skarmory, however Gengar and his Team Meanies decide to interfere. 
(Source: Anime News Network)

Nintendo of America