Jolteon

Jolteon's high Speed and Special stats and critical hit rate make its Thunderbolt a big threat. Because of this, Jolteon is able to outpace the whole metagame and is one of the few Pokemon that can revenge kill a weakened Tauros. It is also a good lead because of its ability to force a lead Starmie to switch out with Thunderbolt and paralyze other leads like Alakazam, Exeggutor, and Jynx with Thunder Wave. Jolteon also has an important defensive niche that allows it to be one of the few Pokemon to take on Zapdos comfortably due to resisting both of its STAB options as well as put pressure on Water-types like Slowbro and Cloyster with Thunderbolt. While Pokemon like Chansey, Exeggutor, and Alakazam can take Jolteon's Thunderbolt, it can cripple these Pokemon with Thunder Wave. However, outside of its STAB move, Jolteon does not have any other good attacking moves, as it only has two good options in Pin Missile and Double Kick, which fail to do major damage outside of a potential critical hit even on super effective targets like Exeggutor and Chansey due to Jolteon's low Attack stat. Furthermore, Jolteon is unable to deal with Ground-types like Rhydon and Golem, as it cannot do any good damage to them with any of its attacks and gets OHKOed by Earthquake.