Moves
Solar Beam allows Weepinbell to hit Rock-, Water-, and Ground-types such as Golem, Lumineon, and Stunfisk, and it is Weepinbell's most spammable move, hitting most targets for solid damage. Sludge Bomb allows Weepinbell to hit Grass-types that resist Solar Beam, such as Tangela and Leafeon, for super effective damage, and Fire-types, such as Monferno and Rapidash, for neutral damage, and it is also Weepinbell's only attack that works outside of sun. Weather Ball allows Weepinbell to hit Roselia, Gourgeist-XL, and Steel-types such as Pawniard and Klang for super effective damage when sun is up. Sleep Powder puts specially defensive walls such as Grumpig and Audino to sleep, allowing Weepinbell to 2HKO or 3HKO them more easily, and it also allows Weepinbell to deal with Sucker Punch users, such as Pawniard and Golem. Growth is an option over Sleep Powder so that Weepinbell can sweep more easily and get past special walls such as Grumpig, but it finds it hard to set up Growth because of its low bulk.
Set Details
This EV spread combined with a Modest nature maximizes Weepinbell's sweeping abilities and allows it to outspeed as much as possible during sun. Chlorophyll is the chosen ability in order for Weepinbell to outspeed threats during sun. Life Orb maximizes Weepinbell's damage output and allows it to hit as hard as possible.
Usage Tips
Weepinbell should not be attempting to sweep outside of sun, as it is very slow outside of it, and it should only be switching in on Grass-type attacks, Toxic, or on free switches. Weepinbell is great for breaking walls early- to mid-game, but it is also useful for cleaning up late-game. If Weepinbell has Sleep Powder, it should use it on special walls that it has trouble getting past, such as Audino, or on Sucker Punch users, like Pawniard. If Weepinbell has Growth, it should set up on Pokemon that cannot do much to it, such as Tangela and Roselia. Weepinbell also should be wary of faster Pokemon such as Choice Scarf Mr. Mime and strong priority attacks from Pokemon such as Cacturne, as they can deal quite a bit of damage to Weepinbell and limit the amount of turns it gets to attack.
Team Options
Weepinbell should only be used on sun teams, as it relies on Chlorophyll to sweep. A sun setter, such as Onix or Golem, is absolutely mandatory to provide Stealth Rock and sun support in order for Weepinbell to sweep. Volbeat provides both Sunny Day support and a slow U-turn in order to get Weepinbell safely on the field. Other Chlorophyll users, such as Sawsbuck and Leafeon, pair well with Weepinbell and appreciate Weepinbell's ability to breaking through walls to help them sweep late-game. Fire-types, such as Rapidash and Monferno, benefit from the sun and can switch into Fire-type attacks if necessary. A Pokemon that can check Jumpluff, such as Zebstrika, is beneficial, as Chlorophyll Jumpluff threatens to outspeed and KO Weepinbell with Acrobatics.
