6 Notoriously Tough Non-Legendary Pokémon Bosses in Mainline Games
Across the Pokémon games series, There are standout non-legendary Pokémon from trainer battles that have frustrated players for decades due to brutal movesets, stats, abilities, and poor matchup timing.
- Miltank (Whitney’s ace, Pokémon Gold/Silver/Crystal & HeartGold/SoulSilver) The ultimate early-game wall: Level 20-23 with base 100 Speed outspeeding your team, Rollout ramps to devastating power (up to 480 BP after 5 turns), Milk Drink full-heals, STAB Stomp flinches, and Attract locks males. Few counters without trading (female Machop) or grinding; it’s swept kids worldwide.
- Garchomp (Cynthia’s ace, Pokémon Diamond/Pearl/Platinum, Brilliant Diamond/Shining Pearl, & Black/White cameo) Pseudo-legendary terror at Lv. 62-88: Yache Berry + Rough Skin tanks Ice hits, Swords Dance boosts Earthquake/Dragon Claw to OHKOs, and 102 Speed + high Attack shreds unprepared teams. Cynthia’s full squad sets it up perfectly; even overleveled squads struggle without Dragon/Ice coverage.
- Slaking (Norman’s aces x2, Pokémon Ruby/Sapphire/Emerald & Omega Ruby/Alpha Sapphire) Two behemoths at Lv. 28-31: Base 670 stats (highest non-legendary total) with Truant (skips every other turn), but Facade (doubled by poison/paralysis to 280 BP) and Shadow Claw/Faint Attack ignore Ghosts. Protect stalls, but mid-game Normal weakness scarcity + family ties make it a slog.
- Kingdra (Clair’s ace, Pokémon Gold/Silver/Crystal & HeartGold/SoulSilver) Lv. 40-41 Water/Dragon tank: Dragonbreath 30% paralysis + Hydro Pump/ Hyper Beam/Surf coverage, Smokescreen evasion, only Dragon-weak pre-Fairy. Post-Dragon Fang quest; limited Ice moves force overleveling or paralysis cheese.
- Hydreigon (Ghetsis’s ace, Pokémon Black/White & Black 2/White 2) Lv. 54 pseudo-legendary: Draco Meteor/Surf/Focus Blast/Dragon Pulse hits neutrally everywhere, massive Sp. Atk/Speed. Ghetsis’s diverse team (no-weak Eelektross, stall Cofagrigus) funnels to it; surprise factor + coverage nukes Nuzlockes.
- Haxorus (Drayden/Iris’s ace, Pokémon Black/White & sequels) Lv. 40-48 Dragon: Dragon Dance sweeps, Mold Breaker ignores abilities, Dragon Claw/ Earthquake/ Poison Jab coverage + Sitrus Berry. Pre-Fairy Dragons dominate; few Ice counters mid/late-game.
No Snorax? That bro doesn’t have the trainer!
Honorable mentions: Elesa’s Emolga duo (BW Volt Switch hell), Lenora’s Watchog (BW Retaliate OHKOs), Sabrina’s Alakazam (Gen 1 Psychic dominance).


so sorry for snorax lol
Sometimes It depends on what pokemon you use.
There are many more pokemon that are strong.
I like to use garchomp and tyranitar.
I love pokemon always
I use Tyranitar for most of the time.