Plusle (the Cheering Pokémon) is a relatively rare Electric-type Pokémon found among grassy fields and meadows within the Hoenn and Kalos regions as well as the Kanto, Johto, Sinnoh and Unova regions on rare occasions. Though they are relatively weak and have little in the way of combat potential, Plusle are energetic fighters that love nothing more than cheering on their fellow combatants in Multi-Pokémon battles. If your team needs some serious moral support in the heat of battle without making your opposition too nervous, then this is definitely the Pokémon for you!
To put it simply, Plusle and Minun are bizarre creatures; unlike almost all other types of Pokémon, these creatures seem to live only for the benefit of others, often times putting their own lives in danger in order to cheer on friends and teammates. They only eat berries, are completely docile, and are practically defenseless…yet at the same time, they have no known natural predators. Plusle and Minun thus represent a unique 'idol' or 'forbidden fruit' situation: Because their cheering abilities are often beneficial to everyone in their general vicinity, they are considered to be good omens and are therefore never attacked in the wild. This might also explain why the two species are rather limited in terms of combat efficiency and thus rely primarily on support moves. Furthermore, it is quite likely that these two species developed together throughout history, as their primary Abilities (Plus and Minus) are uniquely designed to only work when there is a Pokémon of the opposite Ability present; these Abilities are also normally shared by the members of the Klink family, though for unrelated reasons. Out of battle these Abilities have no real use, but they do have health benefits in the case of Plusle and Minun; when their electrical currents are generated together, it appears that Plusle and Minun can actually help promote circulation and boost vitality within other organisms (this only makes sense because Plusle have an affinity for positive charges while Minun have an affinity for negative charges).
Draining energy from telephone poles, Plusle mainly use their electrical powers for support by shorting out the electricity in their bodies and thus generating large bursts of sparks. By concentrating these shorts into their hands, Plusle can essentially create electrical pom-poms that crackle loudly and flash in vibrant colors; when combined with their rhythmic body movements, this action actually makes Plusle look like real cheerleaders. When their teammates are in trouble, Plusle will give off even more sparks in an effort to revitalize their teammates' spirits. Unfortunately, Plusle are not very strong in the emotional stability department; if their teammates lose, they will cry very loudly, which in turn makes them highly vulnerable to attack.
Even without any serious forms of offense, Plusle are still useful creatures that can easily perk up low spirits on any team in a moment's notice. They might only be considered novelty Pokémon by some trainers, but it can't be argued that these adorable little creatures make great pets and wonderful partners for young trainers. Make sure to bring a couple of these critters with you the next time you battle in an arena; they might not be able to battle very well, but they can certainly cheer you on as well as any professional cheerleader!