Pokémon Monotype Challenge Guide — Every Type Ranked
13 min read · Updated May 2025
A monotype challenge restricts your team to a single Pokémon type for the entire game. Some types breeze through entire games while others make specific gyms nearly impossible. This guide ranks all 18 types by difficulty, lists the best monotype picks for each, and explains how to handle the hardest gym matchups.
What Is the Monotype Challenge?
The monotype challenge is one of the oldest self-imposed Pokémon restrictions. You choose one type before the game begins — Fire, Water, Psychic, whatever you like — and every Pokémon on your team must be that type (or dual-type including that type). HM usage rules vary, but most players allow 1 HM slave from outside the type.
The challenge ranges from trivially easy (Water mono in Hoenn, where Surf trivialises half the gyms) to nearly impossible (Normal mono in Gen 1, where no Pokémon has a type advantage over anything). The difficulty depends heavily on both your chosen type and your chosen game.
Use the Pokédex type filter to see every available Pokémon for your chosen mono type before the run begins.
All 18 Types Ranked by Challenge Difficulty
Water has the widest available Pokémon pool across all games and strong options available early. Psychic has overwhelming power in Gen 1–3. Ground handles most of the gym lineup in any game.
Fire mono is rough early (limited availability in many games) but powerful mid-game. Dragon and Steel lack options in the first third of most runs but dominate once you evolve.
Bug is extremely available but weak late-game. Ice has almost no defensive value — 4 weaknesses with minimal resists. Rock struggles against early Water and Grass gyms. Fighting has huge gaps vs. Flying and Psychic.
Normal has no type advantages whatsoever — every fight is neutral. Flying has no dual-type options for offensive coverage. Grass is shredded by Fire, Ice, Bug, Flying, and Poison.
Best Picks for Each Difficult Type
Bug mono
Scizor (if available), Heracross, Yanmega. Steel/Bug Scizor removes most weaknesses. Heracross hits hard despite fragility.
Ice mono
Lapras, Walrein, Froslass. Lapras is the single best Ice mono anchor — high HP + Water/Ice dual STAB covers most threats.
Normal mono
Snorlax, Porygon-Z, Clefable (if Fairy doesn't disqualify). Snorlax provides bulk that Normal desperately needs.
Flying mono
Gliscor, Skarmory, Landorus-Therian. Ground/Flying removes Electric weakness — critical for Flying mono survival.
Grass mono
Ferrothorn, Venusaur, Amoonguss. Ferrothorn's Steel/Grass typing neutralises most Grass weaknesses. Essential pick.
Poison mono
Toxapex, Gengar, Scolipede. Toxapex's regenerator bulk is the closest thing Poison mono has to a reliable defensive anchor.
5 Tips for Any Monotype Run
Check gym leader types before you commit
Some game + type combinations are nearly impossible. Poison mono vs. HeartGold (the Ghost gym) or Normal mono vs. anything requires careful planning. Scout your matchups before the run, not during.
Allow dual-types that include your mono-type
The standard rule is: your Pokémon must have your chosen type. Charizard (Fire/Flying) counts for a Fire mono. This flexibility dramatically improves team building options.
Plan your HM slaves carefully
In Gen 1–5, you need HMs that might not exist in your type. Most players allow 1–2 HM slaves from outside the mono type — agree with yourself on this rule before you start.
Use our generator for type-filtered picks
The Random Pokémon Generator and Pokédex can filter by type so you can see every available Pokémon for your chosen mono before the run begins.
Know your immunity and weakness ceiling
Before the first gym, know what types hit you for 4× damage and plan routes to avoid those wild encounters or have a coverage solution ready.
Hardest Gym Matchups by Type
| Your Type | Hardest Gym | Workaround |
|---|---|---|
| Bug | Flannery (Fire) | Levitate users immune to Earthquake chip; switch into Water routes first |
| Grass | Flannery (Fire) | Ferrothorn or any Grass/Rock type tanks Fire hits better |
| Normal | Every gym | Rely on sheer power difference and held item advantage |
| Ice | Lt. Surge / Wattson | Lapras can tank Electric with high HP; bring Lum Berries |
| Poison | Koga / Janine (own type) | Neutral matchup; use stat advantage and PP stall |
| Psychic | Ghost gyms (Gen 3+) | Ghost is neutral vs. Psychic; use Dark coverage moves from dual-types |
Find Your Monotype Team
Filter the Pokédex by type to see every available Pokémon for your chosen mono before the run starts.