Moves
Scald is Vaporeon's most spammable STAB move and possesses a 30% chance to burn the foe, letting Vaporeon dissuade physical attackers like Passimian, Decidueye, Braviary, and Dhelmise from switching in. Toxic allows Vaporeon to threaten bulky Water-types like Blastoise, Slowking, and opposing Vaporeon while also crippling Pokemon such as Whimsicott, Heliolisk, Sceptile, and Comfey. Alternatively, Heal Bell can be used to help prevent Vaporeon from being badly poisoned by Pokemon like defensive Slowking, Golbat, and defensive Hariyama and provide its team with cleric support. However, Vaporeon relies heavily on Toxic to damage opposing bulky Water-types, and the lack of Toxic makes Vaporeon even more passive. Wish gives Vaporeon a source of active recovery and supports Vaporeon's teammates well thanks to Vaporeon's high base HP stat, meaning Wish will restore more HP. Protect lets Vaporeon scout opposing Choice item Pokemon, recover free health with Leftovers and Wish, and rack up Toxic damage on opposing Pokemon. Additionally, Protect lets Vaporeon take boosted Z-Moves from the likes of Incineroar, Klinklang, and Houndoom, allowing it to survive their subsequent attacks and retaliate with Scald.
Set Details
252 HP EVs and 252 Defense EVs with a Bold nature maximize Vaporeon's physical bulk, letting it better handle physical attackers like Passimian, Hariyama, and Klinklang. Leftovers provides Vaporeon with passive recovery, and it can take advantage of this further with Protect. Water Absorb restores Vaporeon's health when it is hit by a Water-type move and gives it an immunity to Water, which aids it in checking Pokemon such as Slowking and Samurott.
Usage Tips
Vaporeon should look to spread status early-game through the use of Scald and Toxic to cripple the opposing team for its teammates and punish Pokemon such as Decidueye, Dhelmise, and Heliolisk for switching in in an attempt to gain momentum. Additionally, Vaporeon should always prioritize using Toxic if the opponent has a bulky Water-type like Slowking on the field, as badly poisoning it is much more valuable than burning it in order to cripple its longevity. Although Heal Bell variants of Vaporeon can remove status such as Toxic poison, non-Heal Bell Vaporeon must watch out for Toxic from Pokemon like Delphox and Steelix, as being badly poisoned greatly limits Vaporeon's longevity. Vaporeon can be switched into defensive Pokemon that cannot do much harm to it such as Rhydon and Palossand in order to gain momentum and have an easier time passing a Wish to a teammate. Be mindful of switching Vaporeon into Pokemon like Incineroar, Sneasel, and Passimian, as while Vaporeon can stomach hits from these Pokemon well, it risks losing its Leftovers to a Knock Off. Additionally, while Vaporeon is an effective check to physical attackers like the aforementioned Pokemon, its low physical bulk can lead to it being overwhelmed by stronger physical wallbreakers like Medicham and force it to use Wish simply to sustain itself rather than to support its team. If the opponent has a Pokemon that doesn't mind Toxic and Scald such as Blastoise, Refresh Seismitoad, or Ferroseed, it is very likely they will switch into Vaporeon. Therefore, switching into a Pokemon that can take advantage of such a play like Electrium Z Magmortar or Grassium Z Delphox is a good idea. Vaporeon should use Protect when it is up against a Choice item user like Alolan Exeggutor or Passimian to scout what move they are going to use, gain free passive recovery via Leftovers, and guarantee recovery from Wish.
Team Options
Vaporeon fits best on balanced teams that appreciate its ability to provide Wish support and pivot into threatening wallbreakers like Incineroar and Guzzlord. Entry hazard support from the likes of Rhydon, Palossand, and Torterra synergizes well with Vaporeon chipping down foes with Toxic and repetitive uses of Scald. Grass-types like Whimsicott and Sceptile work well alongside Vaporeon, being able to take Electric- and Grass-type attacks while also appreciating Vaporeon's ability to punish bulky Water-types with Toxic. Decidueye and Dhelmise appreciate Vaporeon being able to switch into Incineroar and Sneasel. Whimsicott, Decidueye, and Dhelmise all appreciate receiving Wishes from Vaporeon, as it allows them to better use their resistances to Water and Fighting to pivot in. Incineroar is a great partner for Vaporeon, as Vaporeon handles both problematic Rock- and Ground-types like Aerodactyl and Rhydon and Fighting-types like Passimian and Hariyama. Furthermore, due to Incineroar's lack of sustainability outside of a potential Berry, it appreciates being able to receive large Wishes from Vaporeon. In return, Incineroar deals with Grass-types like Decidueye and Whimsicott for Vaporeon and can switch into Mega Glalie to scout for Freeze-Dry. Steel-types such as Steelix and Silvally-Steel appreciate Vaporeon checking Fire-types like Incineroar, non-Grassium Z Delphox, and Houndoom and providing Wish support. Additionally, Steelix and Silvally-Steel check Grass-type wallbreakers like Whimsicott and Dhelmise for Vaporeon.