Dipolino

Dipolino (proposed by Mason Green), the Dipole Pokémon, is an Electric/Flying-type Pokémon. When both a Plusle and a Minun level up after the same battle (and both are at least level 40), they will combine into one Pokémon: Dipolino. A newly obtained Dipolino's level, XP, and stats will be calculated based on a combination of its predecessors'.

The Poké Balls they occupied also combine into one, forming a Duo Ball (a conjoined pair of Poké Balls that is shaped like a peanut shell); a Duo Ball can only hold a Dipolino, will disappear if it is set free, and cannot be obtained in any other way.

Dipolino could be called the opposite of Nincada. While Nincada evolves into two different Pokémon (Ninjask and Shedinja), Dipolino evolves from two different Pokémon. This occurs because when Plusle and Minun level up, they release large amounts of positive and negative electrical energy, and if this occurs in close enough proximity, the attractive force between them is strong enough to permanently join their bodies together. It also enables Dipolino to generate magnetic as well as electric fields.

Dipolino, as one might expect, resembles a Plusle and Minun joined together like a pair of conjoined twins. Their tails have also increased in size and joined together into one enormous structure that resembles an airplane wing. This, along with the powerful electromagnetic fields it generates, enables Dipolino to fly. Dipolino is more powerful than Raichu and nearly as strong as Zapdos.

The name Dipolino comes from Dipole and Topolino (the Italian word for "little mouse", and also Mickey Mouse's name in Italian).