Best Mega Metagross ex Deck Guide for Pokémon TCG Pocket

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Hola Everyone! It’s your boy Anketsu here, and welcome to a brand new Pokémon TCG Pocket Deck guide.

Mega Metagross ex doesn’t just hit hard it becomes stronger every single turn.

The longer it stays on the field, the more Metal Energy it stacks, turning into an unstoppable tank capable of knocking out even the bulkiest Pokémon in a single attack.

If you enjoy slow, methodical strategies that overwhelm opponents through raw durability rather than explosive starts, this is easily one of the most satisfying decks in Pokémon TCG Pocket.

In this guide, we’ll cover the best Mega Metagross ex deck list, its strongest partners, optimal strategy, matchups, and the key decisions that will help you pilot the deck successfully.

Now grab a seat, relax, and enjoy the guide!

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Main Cards Analysis

Below you will find the analysis of all the cards in the deck, with combos and strategies.
If instead you want to see the complete decklist right away, click here:

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Pokémon Cards

Mega Metagross ex ⚙️

Mega Metagross ex is the heart of this deck and one of the bulkiest Pokémon introduced in Ruler of the Skies. As a Stage 2 Metal Pokémon, it comes with an impressive 230 HP, a Fire Weakness, and a Retreat Cost of three. Those stats alone already make it difficult to take down, but its real strength comes from its attack.

Gatling Slug costs three Colorless Energy and deals 100 damage, plus 10 more damage for each Metal Energy attached to Mega Metagross ex. While the attack technically works with any type of Energy, this deck is built around stacking as many Metal Energy as possible.

Even reaching four attached Energy immediately pushes the attack to 140 damage, and once Mega Metagross reaches six or seven Energy, very few Pokémon in Pokémon TCG Pocket can survive a hit.

A Walking Tank… or an AT-AT?

The first time I saw Mega Metagross ex in action, I couldn’t stop thinking about the AT-AT walkers from Star Wars. It’s huge, intimidating, and once it starts moving forward, it just keeps crushing everything in its path.

That’s exactly how this deck feels: you spend the early turns slowly building your unstoppable machine, and once it’s fully online, your opponent can only hope they brought enough firepower to stop it.

Strategy and Game Plan

Because Mega Metagross ex becomes stronger with every additional Energy, the entire strategy revolves around buying time during the early game. Instead of rushing for quick knockouts, your priority is to establish your evolution line while continuously attaching Metal Energy. The longer Mega Metagross stays on the field, the harder it becomes to stop.

By the late game, a fully powered Mega Metagross ex can comfortably sweep through entire teams with massive one-hit knockouts.

Thankfully, surviving long enough to reach that point isn’t difficult. With 230 HP, Mega Metagross naturally survives at least two attacks from most of the current meta.

Once you combine its huge health pool with damage reduction tools and healing cards, it’s not uncommon for Mega Metagross to tank three or even four attacks before finally going down. That kind of durability is exactly what allows the deck to slowly overwhelm opponents in longer games.

Best Support Pokémon and Trainer Cards

To make this strategy work consistently, you’ll want partners that accelerate your Energy attachments. Orthworm, Dialga ex, and Probopass are currently some of the best support Pokémon available, helping Mega Metagross reach its ideal damage numbers much faster.

On the defensive side, cards like Lucky Ice Pop, Pokémon Center Lady, Steel Apron, Heavy Helmet, and Metal Core Barrier dramatically increase its staying power, forcing opponents to spend several turns just trying to remove a single attacker.

Best Matchups and Counters

One of the reasons I think the Mega Metagross ex deck is so versatile is that it can adapt its role depending on the matchup. Against faster decks with relatively low HP totals such as Miraidon ex, Zoroark ex, Koraidon ex, and Milotic ex you can start applying pressure much earlier, taking advantage of Mega Metagross’ naturally high bulk to trade efficiently.

Against other Mega decks, however, patience is usually rewarded. If you spend the early turns farming enough Metal Energy, Mega Metagross comfortably reaches the damage needed to knock out huge threats like Mega Rayquaza ex, Mega Sableye ex, and Mega Diancie ex in a single attack.

The Steel Apron variant is also one of my favorite ways to build the deck because it gives Mega Metagross another valuable niche.

By reducing damage from Special Conditions, it performs extremely well into strategies built around Poison and Sleep, making matchups against Mega Sceptile ex or Igglybuff–Darkrai considerably easier than they initially appear.

Of course, the deck isn’t without weaknesses. Fire decks remain its biggest problem, especially aggressive lists like Mega Blaziken ex that can apply heavy pressure before Mega Metagross is fully online. The Growlithe package found in Puppy Pile decks can also be surprisingly difficult to handle.

More generally, any archetype capable of attacking immediately and overwhelming your early-game tanks such as Mega Lucario ex can make the setup phase much harder, forcing you to play defensively until your main attacker is finally ready.

My Thoughts

Its design also reminds me a lot of Gholdengo ex from Paldean Wonders (which I still love to play today). It feels like the Metal archetype is slowly evolving into a family of Pokémon whose damage scales with the amount of Energy they can accumulate.

It’s an interesting direction for the type, and honestly, I’m curious to see how far the developers take this mechanic in future expansions; what do you think of this game mechanic?

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Other Pokémon 🔩

The Support Pokémon listed below are not mandatory inclusions for every build. They are simply different options that can be mixed, swapped, or adjusted depending on your preferred strategy, playstyle, and the cards you currently have available.

While Mega Metagross ex is undoubtedly the star of the deck, it wouldn’t be nearly as consistent without the right supporting Pokémon. Most of these cards have a very specific role: either accelerating Metal Energy or extending Mega Metagross’ longevity so it can eventually take over the game.

Dialga ex

If you’re looking for the strongest Energy accelerator available, Dialga ex from Space-Time Smackdown is still hard to beat. Its Metallic Turbo attack deals 30 damage for just two Energy while attaching two Metal Energy from your Energy Zone to one of your Benched Pokémon.

Since Dialga literally controls time, it’s fitting that its gameplay lets you save valuable turns as well. Those extra Energy attachments allow Mega Metagross ex to come online much earlier than it normally would, making Dialga ex one of the best partners for this deck.

Orthworm

Think of Orthworm as the smaller, faster version of Dialga ex. It’s a Basic Pokémon whose attack costs just one Energy, deals 10 damage, and attaches a Metal Energy to one of your Benched Pokémon.

The acceleration is slower, but Orthworm shines during the opening turns. It starts applying pressure immediately, and since it isn’t an ex Pokémon, losing it doesn’t hand your opponent extra points. If you prefer a more consistent early game, Orthworm is an excellent alternative.

Probopass

Probopass sits somewhere between Orthworm and Dialga ex. As a Stage 1 Pokémon, it requires a little more setup than Orthworm, but it still provides reliable Metal Energy acceleration while offering decent bulk.

If your build needs another way to keep Energy flowing throughout the game, Probopass is a solid inclusion.

Perrserker

Perrserker is one of the most useful utility Pokémon available for Metal decks. Its Ability lets you recover a discarded Pokémon Tool, giving you access to valuable resources throughout longer games.

This becomes especially powerful alongside Metal Core Barrier. Recycling the Tool allows Mega Metagross ex to repeatedly absorb an additional 50 damage, making an already difficult Pokémon even harder to knock out. In grindy matchups, that extra durability can easily decide the game.

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Trainer Cards

Just like the Pokémon section, these Trainer cards are not all meant to be played together. They are simply useful options that can work inside different versions of the deck.

Staple Cards

There’s not much to say about the Supporters. Professor’s Research, Copycat, Cyrus, and even Poké Ball have been staples for what feels like forever. You’ve probably played them hundreds of times across countless decks, so I won’t waste your time explaining what they do.

The important part is simple: if you’re building a competitive Mega Metagross ex deck, these cards should almost always make the cut.

Pokémon Tools

Mega Metagross ex becomes much harder to remove once you start equipping the right Tools. Steel Apron is fantastic for shutting down Special Condition strategies, making matchups against Poison and Sleep decks significantly more manageable. Heavy Helmet slowly chips away at incoming damage throughout the game and works perfectly with Mega Metagross’ hefty Retreat Cost of three.

Finally, Metal Core Barrier is arguably the strongest defensive option available, reducing damage by 50 for an entire turn and allowing your main attacker to survive situations where it would normally be knocked out.

Healing Cards

When your Pokémon already have enormous HP pools, every point of healing becomes even more valuable. That’s exactly why Lucky Ice Pop and Pokémon Center Lady fit so well into this deck. Keeping Mega Metagross ex on the field for just one extra turn is often enough to swing an entire game.

Of course, that also depends on your luck. If you’re one of those players who somehow flips five or six heads in a row with Lucky Ice Pop, congratulations I don’t want to play against you. If you’re like me and the coin seems magnetically attracted to tails… well, maybe don’t rely on it too much.

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DeckList 🃏

Below you can find some of the most interesting builds, ideas and variants for the deck featured above.

Mega Metagross ex Deck Dialga ex

Mega Metagross ex Deck Dialga ex: The most consistent build, using Dialga ex to tank early attacks while accelerating Metal Energy onto Mega Metagross ex.

Mega Metagross ex Deck Probopass

Mega Metagross ex Deck Probopass: A more Prize efficient build that sacrifices some speed for better long term trades and consistency.

Mega Metagross ex Deck Perrserker

Mega Metagross ex Deck Perrserker: A defensive variant focused on recycling Tools and stacking damage reduction to create an almost unbreakable Mega Metagross ex.

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FINAL THOUGHTS

Mega Metagross ex is one of the most rewarding decks in Pokémon TCG Pocket if you enjoy playing the long game. Build your board, keep stacking Metal Energy, protect your main attacker, and eventually you’ll be piloting an unstoppable tank capable of knocking out almost anything in its path. It may require a little patience, but once it gets going, stopping it becomes a real challenge.

What do you think about Mega Metagross ex? Have you been playing it with Dialga ex, Orthworm, or another partner I didn’t mention? I’d love to hear your experience, so feel free to leave a comment and share your favorite build or any tech cards that have been working well for you.

If this guide helped you, consider sharing it with your friends or your local Pokémon community. And don’t forget to check back on the site regularly we’re constantly updating our deck guides, strategy articles, and meta analysis for every new Pokémon TCG Pocket expansion.

Still have questions about the Deck? Check out the FAQ below for quick answers to the most common ones.

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F.A.Q. 🚨

Related Guides 🔗

Below you can find more decks and guides from the same set, along with strategies and Pokémon that share similar mechanics with this Koraidon ex build. Feel free to explore them and find the deck that best fits your playstyle.

• All the Best Ruler of the Skies Decks in Pokémon TCG Pocket