Species: Cheering pokemon
Height: 0.4 m Weight: 4.2 kg
Plusle evolves from Summouse via happiness with a Minun in the party, it evolves into Multle if exposed to a thunder stone
Plusle in a generation III pokemon native to both Hoenn and Koshen. As it is not knew, no great detail needs to be said. Just go on bulbapedia.