Meganium

Overgrow
Boosts power of Grass-type moves by 50% when at 1/3 HP or less.
Leaf Guard
Prevents status effects in sun.
Type Tier
Grass NU
Level 50 Statistics (see level 5, 50, 100)
Min- Min Max Max+
HP
80
- 155 187 -
Atk
82
91 102 134 147
Def
100
108 120 152 167
SpA
83
92 103 135 148
SpD
100
108 120 152 167
Spe
80
90 100 132 145

Overview

Among the plethora of Grass-types available in RU, Meganium truly doesn't have too much to offer over its competition. However, with its good all-around bulk, and access to Aromatherapy and Dragon Tail, Meganium does have a niche in providing both moves in one teamslot, and with its lack of a secondary typing, it keeps useful resistances to Electric-, Ground-, and Water-type moves that some other Grass-types do not possess. Outside of this role, however, Meganium suffers immensely from its low attacking stats and weaknesses to common types of moves such as Bug and Fire that leave it weak to common threats such as Entei and Escavalier. Unless you need the specific role Meganium provides, you are probably better off using a different Grass-type such as Amoonguss, Tangrowth, Torterra, or Roselia.

Name Item Nature

Support

Leftovers Calm
Moveset EVs
~ Aromatherapy
~ Dragon Tail
~ Giga Drain
~ Synthesis / Toxic
252 HP / 4 Def / 252 SpD

With the ability to take both physical and special hits somewhat well combined with the ability to support its team via healing status effects and phazing, Meganium has what it takes to be a good supporter for its team. Aromatherapy lets Meganium cure its team of status, possibly giving teammates a second chance if they were crippled by it. It also ensures Meganium is not worn down by Toxic, which would ruin its staying power otherwise. Dragon Tail allows Meganium to phaze opponents, and it works well with entry hazards in order to rack up damage. Phazing also prevents Meganium from being setup fodder for sweepers unless they are using Substitute. Giga Drain is Meganium's STAB move of choice and lets Meganium keep itself healthy while damaging foes such as Kabutops. For the final slot, Synthesis provides useful instant recovery to let Meganium last longer, but Toxic is a viable alternative in order to wear down other Pokemon.

Team Options & Additional Comments >>>

Other Options

Meganium could run a Swords Dance set with Seed Bomb, Earthquake, and Return, but such a set is usually outclassed by either the much faster and stronger Sceptile or the bulkier and much stronger Torterra. In addition, Meganium has no strong physical moves, meaning it takes a long time to start hitting hard. Hidden Power Fire is always an option for anything that struggles against Escavalier, but unfortunately an uninvested Hidden Power Fire will never get close to OHKOing Escavalier. There are many strong STAB moves that Meganium has access to, including SolarBeam alongside Sunny Day, Leaf Storm, and Petal Dance. Unfortunately, Meganium lacks the power to take advantage of them, leaving it outclassed by Pokemon such as Lilligant in this regard.

Checks and Counters

Meganium is relatively easy to counter due to its low offensive presence. Pokemon that can hit it hard enough to OHKO it, such as Escavalier, Durant, Entei, Braviary, and Emboar, none of which fear taking an significant damage from Giga Drain, are good options. Bouffalant, however, is quite possibly Meganium's best counter, as it has Sap Sipper and Meganium's Dragon Tail won't even break its Substitutes in two hits, giving it plenty of time to set up. Anything else with Sap Sipper, such as Miltank and Sawsbuck, also walls it and can take advantage of the boost Sap Sipper provides. Cryogonal walls Meganium with its high Special Defense, can use Rapid Spin to eliminate the entry hazards Meganium relies on, and can hit back with a STAB Ice Beam. Grass / Poison types such as Roselia and Amoonguss are immune to Toxic; Roselia can set up Spikes on Meganium and wear it down with Sludge Bomb, and Amoonguss has Regenerator to mitigate entry hazard damage. Overall, Meganium is not too much of a threat as long as you don't let it rack up too much passive damage, but if Aromatherapy heals a sweeper that was neutered by status, be sure to watch out for it.

Unreleased

Leaf Guard is fairly situational because of how rare manual sun is, and furthermore, the fact that Meganium already has Aromatherapy makes Leaf Guard even less useful. At the very least, Overgrow lets Giga Drain do some extra damage when Meganium is running low on health, so it comes in handy more often.