A good gym defender has one job: waste the attacker’s time so they give up, run out of resources, or move on before clearing the gym. Nothing is truly unbreakable — a determined attacker or two will win eventually — so the goal is to buy minutes, not to be invincible.
The exact picks shift as new Pokémon release, so this is organized by archetype rather than a fixed ranking. If you need the mechanics behind defending — feeding, coins, placement rules — see the defending and PokéCoins guide, or the gyms overview if you’re new to the system.
What Makes a Good Defender
Three traits do the work:
- High Stamina/HP to absorb damage over a long fight.
- High Defense to stretch each round out.
- A typing that complements the gym so attackers can’t sweep the whole lineup with one counter.
Notice what’s not on that list: raw CP. A high-CP Pokémon looks intimidating but decays motivation faster and often deals less practical value than a bulky, lower-CP one.
The Archetypes That Work
The tank — Blissey and Chansey. Normal-types with enormous HP pools. They take a long time to chip down even under ideal counters, which is why they’re the standard bulk pick. Chansey’s lower CP means it decays slowly, making it a strong long-term hold; Blissey hits harder short-term.
The bulky Normal — Snorlax. High HP and heavy hits like Body Slam make it a solid middle-of-the-lineup defender that gives you time to react and feed when a gym comes under attack.
The type counter — a Fairy-type like Togekiss or Gardevoir. Most attackers lead with Machamp or Lucario to clear Normal-types fast. Dropping a Fairy-type immediately after a Blissey punishes that habit: the incoming Fighting moves are resisted, and the Fairy hits back super-effectively, forcing the attacker to stop and swap.
What to Avoid
- Trusting high CP alone. Slaking has huge CP, but its fast move, Yawn, deals zero damage — so it applies far less pressure than the number suggests. Judge defenders by functional bulk and typing, not the CP figure.
- Low-CP filler. A 100 CP Pidgey is a free knockout for the other team and a wasted slot for yours.
- Stacking the same weakness. Six Fighting-weak Pokémon in a row means one Machamp clears the entire gym. Mix in a Fairy, Steel, or Ghost so no single attacker sweeps it.
Putting It Together
Example: say a gym already has a Blissey in the first slot. The attacker will almost certainly open with a Fighting-type to break it. If you add a Togekiss next, that Fighting lead now runs into a Fairy that resists it and deals super-effective damage back — the attacker has to swap mid-fight, losing time. Follow that with a Snorlax, and they’re juggling a third matchup. Each awkward transition is a few more seconds of your coin timer ticking.
That’s the whole idea: not one unbeatable wall, but a lineup that never lets a single counter clear the gym cleanly.
Picking Your Best One
Archetypes tell you what to place; your storage decides which. The best defender is usually a high-IV, bulky specimen — but IVs and defensive ranking aren’t shown on the summary screen, so choosing the right Blissey out of several means checking them individually.
A tracker like GoDex makes that quick: scan a catch screenshot to read a Pokémon’s CP and IVs automatically, then compare your candidates before committing one — so the tank you leave in a gym is your bulkiest, not just the one with the biggest CP.
Key Takeaways
- Time-wasting beats invincibility. No gym holds forever; a good lineup just makes clearing it slow and annoying.
- Bulk and typing over raw CP. Blissey and Chansey anchor most gyms for a reason.
- Break up weaknesses. Follow a Normal-type with a Fairy so one Machamp can’t sweep.
- CP can lie. Slaking’s Yawn deals no damage — don’t be fooled by the number.
The meta shifts as new Pokémon release — check current community defender lists before investing heavily.
We do our best to keep these guides accurate, but Pokémon GO mechanics change often. If you spot a mistake or something that's out of date, please send us feedback — we'll fix it.
About GoDex
A free companion app for tracking your collection, scanning IVs from screenshots, and checking PVP rankings. Available on iOS and Android.
