EV Training Guide: How to EV Train Your Fusions Fast in Pokémon Infinite Fusion

If you want your fusions to hit harder, outspeed everything, or survive hits they have no business surviving, EV training in Pokémon Infinite Fusion is the system that makes it happen. Effort Values are the hidden points your Pokémon earns from battles and vitamins, and they translate directly into extra stat points at higher levels. The short version: decide on a 252/252/6 spread, buy vitamins in Celadon, grind the right wild Pokémon for the rest, and remember the two fusion-only rules that change everything (your fusion keeps the body Pokémon’s EVs, and wild fusions give roughly half the EVs of normal Pokémon).

Quick note: pokemon-infinitefusions.site is an unofficial fan guide. We are not affiliated with Nintendo, Game Freak, or the creators of Pokémon Infinite Fusion. Mechanics below were verified against the community wiki for game version 6.7.2.

How EVs work in Infinite Fusion, and the two rules that change everything

Effort Values work on the same foundation as the mainline games. Every Pokémon you defeat grants EVs in specific stats. Four EVs convert into one extra stat point at level 100. A Pokémon can hold a maximum of 510 EVs in total, and competitive players almost always run a 252/252/6 split: 252 in the most important stat, 252 in the second, and 6 leftover in a third (those 6 EVs give one final stat point, since the conversion rounds down).

That foundation is familiar, but Infinite Fusion adds two mechanics that no mainline guide will warn you about. The first concerns fusing. According to the Fusion FAQs on the community wiki, when you fuse two Pokémon, the resulting fusion takes its EVs from the body Pokémon. The head Pokémon’s EVs do not carry over. This single rule shapes your entire training strategy, and we will build on it below.

The second concerns the wild Pokémon you battle. Wild fusions roam the routes alongside normal Pokémon, and defeating one does not give you the full EV yield of either half. The wiki documents the exact formula: your Pokémon gains the rounded-down average of both halves’ EVs. The wiki’s own example makes it concrete. A Mankey normally gives 1 Attack EV and a Pikachu gives 2 Speed EVs. Defeat a Mankey/Pikachu fusion and you get floor(1/2) = 0 Attack EVs and floor(2/2) = 1 Speed EV. One Speed EV total, where the two unfused Pokémon would have given you three EVs across two battles.

The practical takeaway is blunt: wild fusions are bad EV training targets. When you are grinding a stat, favor areas and encounters with unfused Pokémon, whose EV yields follow the standard mainline values. Every competitor guide that tells you to “battle whatever appears” is costing you roughly half your EVs per battle without telling you.

Pick your EV spread before you fight a single battle

EV training without a plan is how Pokémon end up with 40 Defense EVs they will never use. Before you start, decide what job your fusion does on the team. Fast physical sweepers almost always want 252 Attack, 252 Speed, and 6 HP. Special sweepers swap Attack for Special Attack. Walls and tanks split between HP and one defense, sometimes both. Punch your fusion’s stats into our fusion calculator first so you can see the actual numbers your spread produces at level 50 and 100.

Two details are easy to get wrong. First, nature matters as much as EVs. A nature that boosts your trained stat (Adamant for Attack, Timid for Speed, Modest for Special Attack) multiplies the payoff, while a nature that lowers it quietly undoes your work. If your fusion has the wrong nature, fix that before you invest hours of grinding. Second, decide which component becomes the body before you train, because the fusion inherits the body’s EVs. Train the wrong half and those EVs vanish the moment you fuse.

If you are still assembling the team around your trainee, sketch the roles in our team builder so your EV spreads complement each other instead of overlapping. One fast sweeper and one bulky pivot with thoughtful spreads will outperform two half-trained sweepers every time.

The fastest EV training routine in Pokémon Infinite Fusion: vitamins first, battles second

The quickest legal EV training in Infinite Fusion is not grinding at all. It is shopping. Vitamins are sold for ₽10,000 each at the Celadon Department Store, and each one raises a stat’s EVs directly, no battles required. The wiki’s item list confirms HP Up, Iron (Defense), Calcium (Special Attack), and Carbos (Speed) on the shelves there, with a few also found as pickups on Route 13, in the Silph Co. Head Office, and in Pokémon Mansion. Vitamins are the fastest way to bank the first big chunk of any stat, and they stack with everything else you do afterward.

One honest caveat: the wiki lists vitamins as EV-raising medicine but does not document the exact number of EVs each one grants in Infinite Fusion, nor any per-stat purchase cap. In the mainline games each vitamin adds 10 EVs, and older generations capped vitamin use at 100 EVs per stat. Budget around ₽100,000 per stat if that convention holds, and treat the first vitamin as a test: use one, then check your progress before buying ten more. ()

Wings are the budget alternative. Health Wing, Muscle Wing, Genius Wing, and Clever Wing raise HP, Attack, Special Attack, and Special Defense EVs respectively, and they cost just ₽300 each at the Goldenrod Underground Tunnel shop. Birdkeeper Perry on Route 13 also hands them out. Wings raise EVs in small increments, so they shine for topping off a spread, fixing small mistakes, and training early-game Pokémon when ₽10,000 vitamins are still out of reach. Buy them in bulk whenever you pass through Goldenrod.

After vitamins and wings, battles finish the job. With no Power items or Macho Brace available in normal play (more on that below), each wild battle grants the base EV yield, so target choice is everything. That is where the training spots in the next section earn their keep.

Where to buy every EV training item

Keep this shopping list handy. All locations below are documented on the wiki’s item list:

• Vitamins (HP Up, Iron, Calcium, Carbos): ₽10,000 each at the Celadon Department Store. HP Up is specifically in the vending machine. A few vitamins can also be picked up for free on Route 13, in the Silph Co. Head Office, and in Pokémon Mansion, so grab those before you spend a fortune.
• Wings (Health, Muscle, Genius, Clever): ₽300 each at the Goldenrod Underground Tunnel shop. Also from Birdkeeper Perry on Route 13.
• EV-reducing berries (Kelpsy, Hondew, Grepa, and the rest of the set): ₽750 each at the Kin Island shop, or grown from berry bushes on Routes 18, 30, 36, and 37 and the Route 18 Farm. Each berry lowers EVs in one stat so you can undo mistakes.

Best EV training spots for each stat in Pokémon Infinite Fusion

Infinite Fusion keeps the classic Kanto and Johto maps, so the traditional training spots carry over, with one big adjustment: hunt unfused Pokémon. Remember, wild fusions pay out the rounded-down average of both halves, roughly half the EVs per battle. If a route spawns both, prioritize the unfused encounters. EV yields below are the standard mainline values for unfused species.

• Attack: Mankey on Routes 3, 4, 6, 9, 22, and 23 or in Rock Tunnel (1 Attack EV each; locations per the wiki’s Pokédex data). Rock Tunnel’s Machop also give 1 Attack EV apiece and appear at good levels for mid-game training.
• Defense: Geodude in Mt. Moon and Rock Tunnel (1 Defense EV each). They are slow, common, and weak to Water and Grass, so a trained surfer or razor leaf user one-shots them all day.
• Speed: Zubat in Mt. Moon and other caves (1 Speed EV each). For a faster payout, Pikachu in Viridian Forest gives 2 Speed EVs per knockout, which effectively doubles your per-battle rate.
• Special Attack: Gastly in Pokémon Tower (1 Special Attack EV each) or Abra on Routes 24 and 25 (1 Special Attack EV each). Ghosts fall fast to anything with Bite or a strong neutral hit.
• Special Defense: Drowzee on Route 11 (1 Special Defense EV each) or Tentacool while surfing (1 Special Defense EV each). Tentacool are plentiful on almost any water route once you can surf.
• HP: Caterpie and Weedle in Viridian Forest (1 HP EV each) for early training. Late game, the high-level wild Pokémon on the Sevii Islands give mixed yields, so check each species before committing to a spot.

Use the Infinite Fusion dex to double-check any species’ EV yield before a long grind session. Ten minutes of verification beats two hours of training the wrong stat. And if a route is spawning mostly fusions, move. The halved payouts will quietly double your grind time.

Fusion-only shortcuts: train the body, dodge the fusions

Here is where Infinite Fusion’s quirks become advantages. Because a fusion inherits its EVs from the body Pokémon, the cleanest workflow is to EV train one component fully before fusing, then place it as the body. You get to train a single, familiar species against single-species EV yields, with no fusion math involved. The head contributes its looks, typing, ability options, and movepool. The body contributes the EVs.

This also means you should never EV train the head component with effort you care about, since those EVs are discarded on fusion. If you already trained both halves, put the trained one in the body slot. It is a small decision at the fusion screen with permanent consequences for the fusion’s stats.

Unfusing is equally forgiving. Per the Fusion FAQs, EVs (and IVs) stay with the body when you unfuse, or with the head if the body was sent to the PC because your party was full. The other half gets its EVs reset. So you can unfuse, adjust the team, and refuse without losing the training you did. That makes experimenting with different heads around one well-trained body cheap and safe.

One more subtle point: because wild fusions pay averaged-down EVs, the reverse is also true when you are the one being farmed. It does not matter for training, but it explains why your rival’s fused ace sometimes feels easier to grind against than the numbers suggest.

Fixing a ruined spread with EV-reducing berries

Trained Attack on a special sweeper by accident? Berries fix it. The EV-reducing berry family lowers a stat’s EVs each time you use one, with a side effect of raising friendship. The wiki confirms Kelpsy Berry (lowers Attack EVs), Hondew Berry (lowers Special Attack EVs), and Grepa Berry (lowers Special Defense EVs), each sold for ₽750 at the Kin Island shop and growable from berry bushes on Routes 18, 30, 36, and 37 plus the Route 18 Farm. Every stat has a corresponding berry in the set.

The full-reset workflow is simple: feed the berry for the stat you want to clear until the game tells you it has no effect, then retrain that stat cleanly. Berries are cheap enough at ₽750 that keeping a small stock in your bag is just good hygiene. Grow extras on the Route 18 Farm between gyms and you will never be caught without a reset option.

What does not work here, so stop looking for it

This is the section that separates a real Infinite Fusion guide from the generic ones. Several classic EV training tools are not obtainable in normal gameplay:

• Power items (Power Weight, Bracer, Belt, Lens, Band, Anklet): the wiki’s item list marks every one of them as randomized-mode only. They do not exist in a standard playthrough. Any guide telling you to buy Power items in Infinite Fusion is describing a different game.
• Macho Brace: same story, marked as randomized-mode only on the wiki. You cannot double battle EVs with it in normal play.
• Pokérus: not documented anywhere on the wiki. Some players report encountering it, but there is no verified source confirming it exists in version 6.7.2 or how it behaves if it does. Do not build your training plan around it. ()
• Super Training / Isle Evelup equivalents: Infinite Fusion has no minigame-based EV training system. Vitamins, wings, berries, and battles are the complete toolkit.

Knowing what is missing saves real time. Players following generic advice waste hours hunting Power items that cannot spawn and waiting for a Pokérus infection the wiki never documents. Spend that time on vitamins and targeted grinding instead.

Tracking your EVs without an in-game checker

Unlike recent mainline games, Infinite Fusion has no documented summary-screen EV display on the wiki, so the reliable method is old-fashioned bookkeeping. Keep a running tally per stat as you train. The math is simple enough to do on paper: vitamins and wings first (write down what you bought), then count knockouts. If Pikachu gives 2 Speed EVs and you knocked out 30 of them, that is 60 Speed EVs.

A practical system: train one stat at a time, and stop at clean checkpoints. Ten vitamins (or the series-standard equivalent) plus a counted number of battles gets you to 252 without guesswork. Finish the second stat the same way, then drop the final 6 EVs wherever they help most. Training one stat at a time also makes it obvious when a wild fusion sneaks halved EVs into your count, because the numbers will look wrong against your tally.

For general EV mechanics background, Bulbapedia’s effort values article covers the underlying system the fan game builds on, including the 4-EVs-to-1-stat-point conversion.

EV training FAQ

Do fused Pokémon keep EVs when you fuse or unfuse them?

Yes, with a catch that matters. The fusion takes its EVs from the body Pokémon, so the head’s EVs are lost. When you unfuse, the EVs stay with the body (or the head, if the body was sent to the PC while your party was full). Plan around this: always train the component you intend to use as the body.

Why am I getting fewer EVs than expected from wild battles?

You are probably fighting wild fusions. Defeating a fused wild Pokémon grants the rounded-down average of both halves’ EV yields, which is roughly half what unfused targets give. A Mankey/Pikachu fusion pays out just 1 Speed EV instead of the 3 EVs the two unfused Pokémon would give across two battles. Switch to spots with unfused encounters.

Where do I get Power items or the Macho Brace in Infinite Fusion?

You don’t, in normal gameplay. The community wiki marks all Power items and the Macho Brace as obtainable only in randomized mode. Your EV training toolkit is vitamins (₽10,000, Celadon Department Store), wings (₽300, Goldenrod Underground Tunnel), EV-reducing berries (₽750, Kin Island), and wild battles.

Is there Pokérus in Infinite Fusion?

Not as far as any documented source confirms. The wiki has no Pokérus page or mention, and its mechanics in version 6.7.2 are unverified. Treat any report of it as unconfirmed and never plan your training around doubling EVs from a virus you may never catch.

Can I check my Pokémon’s EVs on the summary screen?

There is no wiki-documented way to view EVs on the summary screen in Infinite Fusion. Track them manually: note what vitamins and wings you used, then count knockouts per stat. Training one stat at a time keeps the bookkeeping honest.

What is the fastest way to EV train a fusion from zero?

Buy vitamins for your two main stats at the Celadon Department Store, top off with ₽300 wings from the Goldenrod Underground Tunnel, then grind the remaining EVs against unfused wild Pokémon at the spots listed above. Train the body component before fusing, and you can go from zero to a finished 252/252/6 spread in well under an hour of focused play once you have the money.

Putting it all together

EV training in Pokémon Infinite Fusion rewards players who respect its two unique rules. Train the body, because the fusion inherits the body’s EVs and discards the head’s. Hunt unfused wild Pokémon, because wild fusions pay roughly half EVs per battle. Vitamins from Celadon and wings from Goldenrod do the heavy lifting, berries from Kin Island fix mistakes, and the classic Power-item shortcuts simply do not exist in normal play. Follow that routine and your fusions will carry the stat lines their designs deserve.

Make sure you are on the latest release (version 6.7.2) before a long training session, since mechanics get tuned between updates. If you need a fresh copy, download Pokémon Infinite Fusion from the official sources linked in our download guide.