Learn how to counter and when to pick Io from our list of counters and matchups updated for the current meta.
| Hero | DisadvantageDis. | Hero Win Rate | |
|---|---|---|---|
 | Underlord | 2.88% | 45.15% |
 | Ancient Apparition | 2.75% | 44.98% |
 | Doom | 2.57% | 50.95% |
 | Winter Wyvern | 2.40% | 47.13% |
 | Troll Warlord | 2.31% | 47.41% |
| Hero | AdvantageAdv. | Hero Win Rate | |
|---|---|---|---|
 | Oracle | 2.76% | 50.02% |
 | Night Stalker | 2.46% | 49.49% |
 | Lifestealer | 2.44% | 50.36% |
 | Spectre | 2.41% | 50.41% |
 | Anti-Mage | 2.07% | 53.41% |
| Hero | DisadvantageDis. | IoHero Win Rate | Matches Played | |
|---|---|---|---|---|
| Underlord | 2.88% | 45.15% | 9,468 |
| Ancient Apparition | 2.75% | 44.98% | 20,905 |
| Doom | 2.57% | 50.95% | 11,070 |
| Winter Wyvern | 2.40% | 47.13% | 9,996 |
| Troll Warlord | 2.31% | 47.41% | 10,728 |
 | Windranger | 2.19% | 54.06% | 16,634 |
 | Leshrac | 2.08% | 48.50% | 5,784 |
 | Magnus | 1.76% | 49.21% | 22,668 |
 | Mars | 1.67% | 49.87% | 19,588 |
 | Sven | 1.65% | 53.12% | 7,517 |
 | Kunkka | 1.64% | 49.17% | 12,961 |
 | Monkey King | 1.61% | 52.60% | 20,781 |
 | Batrider | 1.54% | 55.19% | 3,966 |
 | Shadow Fiend | 1.52% | 47.01% | 72,233 |
 | Slardar | 1.48% | 49.10% | 16,366 |
 | Earthshaker | 1.47% | 49.01% | 51,845 |
 | Marci | 1.47% | 48.53% | 19,495 |
 | Venomancer | 1.41% | 47.92% | 19,241 |
 | Crystal Maiden | 1.40% | 47.49% | 37,090 |
 | Elder Titan | 1.38% | 47.57% | 4,757 |
 | Dragon Knight | 1.35% | 49.21% | 22,835 |
 | Muerta | 1.34% | 50.43% | 11,477 |
 | Lone Druid | 1.33% | 47.54% | 5,635 |
 | Dark Willow | 1.29% | 49.31% | 16,892 |
 | Viper | 1.17% | 48.93% | 21,503 |
 | Primal Beast | 1.12% | 50.33% | 9,990 |
 | Lich | 1.12% | 43.58% | 40,532 |
 | Mirana | 1.12% | 53.04% | 12,117 |
 | Pangolier | 1.11% | 49.52% | 11,692 |
 | Razor | 1.10% | 48.30% | 16,844 |
 | Disruptor | 1.10% | 48.47% | 16,756 |
 | Broodmother | 1.01% | 48.63% | 10,844 |
 | Naga Siren | 1.01% | 52.39% | 3,806 |
 | Vengeful Spirit | 0.97% | 47.25% | 25,174 |
 | Luna | 0.96% | 47.07% | 48,519 |
 | Techies | 0.92% | 51.82% | 26,001 |
 | Enigma | 0.91% | 49.17% | 13,027 |
 | Terrorblade | 0.84% | 51.90% | 12,473 |
 | Phantom Lancer | 0.83% | 51.62% | 9,703 |
 | Kez | 0.82% | 53.42% | 38,885 |
 | Death Prophet | 0.82% | 49.64% | 7,297 |
 | Tiny | 0.79% | 50.72% | 18,545 |
 | Weaver | 0.78% | 50.86% | 19,309 |
 | Dark Seer | 0.77% | 48.60% | 4,802 |
 | Jakiro | 0.76% | 48.48% | 32,866 |
 | Treant Protector | 0.74% | 49.89% | 11,256 |
 | Bounty Hunter | 0.71% | 47.39% | 20,984 |
 | Hoodwink | 0.68% | 52.61% | 32,168 |
 | Keeper of the Light | 0.68% | 50.75% | 5,765 |
 | Witch Doctor | 0.67% | 46.81% | 51,661 |
 | Brewmaster | 0.60% | 50.06% | 2,349 |
 | Dazzle | 0.53% | 51.30% | 30,801 |
 | Sand King | 0.53% | 47.73% | 21,330 |
 | Tusk | 0.46% | 52.32% | 19,380 |
 | Gyrocopter | 0.44% | 51.47% | 13,024 |
 | Undying | 0.39% | 48.36% | 19,988 |
 | Bristleback | 0.39% | 50.50% | 31,367 |
 | Meepo | 0.35% | 50.79% | 5,468 |
 | Ogre Magi | 0.25% | 47.98% | 42,503 |
 | Beastmaster | 0.22% | 51.84% | 10,669 |
 | Drow Ranger | 0.22% | 48.68% | 32,887 |
 | Outworld Destroyer | 0.17% | 48.84% | 12,776 |
 | Phantom Assassin | 0.12% | 49.32% | 55,792 |
 | Slark | 0.08% | 49.87% | 24,068 |
 | Lina | 0.03% | 53.03% | 30,495 |
 | Snapfire | 0.01% | 53.18% | 13,299 |
 | Chaos Knight | 0.00% | 50.15% | 11,672 |
 | Alchemist | -0.09% | 49.46% | 21,238 |
 | Templar Assassin | -0.09% | 55.39% | 14,887 |
 | Nature's Prophet | -0.11% | 54.07% | 24,367 |
 | Axe | -0.12% | 46.88% | 49,421 |
 | Sniper | -0.12% | 50.98% | 55,113 |
 | Pudge | -0.13% | 48.67% | 81,929 |
 | Pugna | -0.15% | 51.49% | 13,209 |
 | Grimstroke | -0.20% | 51.25% | 13,679 |
 | Warlock | -0.21% | 45.48% | 25,512 |
 | Ember Spirit | -0.25% | 52.59% | 10,657 |
 | Faceless Void | -0.30% | 54.43% | 15,820 |
 | Spirit Breaker | -0.33% | 48.52% | 35,851 |
 | Ringmaster | -0.35% | 52.66% | 12,415 |
 | Ursa | -0.39% | 51.01% | 22,496 |
 | Skywrath Mage | -0.39% | 49.98% | 21,896 |
 | Rubick | -0.44% | 52.66% | 47,140 |
 | Silencer | -0.46% | 47.45% | 22,969 |
 | Centaur Warrunner | -0.52% | 48.76% | 16,628 |
 | Huskar | -0.53% | 52.02% | 16,194 |
 | Dawnbreaker | -0.53% | 48.51% | 17,702 |
 | Timbersaw | -0.55% | 51.71% | 24,466 |
 | Medusa | -0.57% | 44.64% | 36,440 |
 | Omniknight | -0.59% | 50.45% | 6,123 |
 | Necrophos | -0.65% | 47.45% | 30,776 |
 | Queen of Pain | -0.71% | 50.58% | 33,549 |
 | Shadow Shaman | -0.78% | 47.33% | 37,814 |
 | Lycan | -0.79% | 50.51% | 5,779 |
 | Lion | -0.80% | 50.13% | 75,597 |
 | Morphling | -0.82% | 52.98% | 29,104 |
 | Riki | -0.83% | 49.30% | 15,025 |
 | Clockwerk | -0.88% | 47.39% | 23,644 |
 | Bane | -0.88% | 50.67% | 6,933 |
 | Enchantress | -0.89% | 53.23% | 9,827 |
 | Visage | -0.94% | 48.93% | 9,643 |
 | Nyx Assassin | -0.95% | 49.53% | 23,300 |
 | Invoker | -1.03% | 51.90% | 58,362 |
 | Legion Commander | -1.03% | 47.61% | 46,902 |
 | Tinker | -1.07% | 52.10% | 9,314 |
 | Clinkz | -1.08% | 50.71% | 13,050 |
 | Chen | -1.09% | 57.47% | 1,728 |
 | Phoenix | -1.14% | 50.32% | 15,349 |
 | Bloodseeker | -1.16% | 49.33% | 9,591 |
 | Earth Spirit | -1.19% | 51.58% | 15,650 |
 | Abaddon | -1.28% | 45.28% | 22,093 |
 | Arc Warden | -1.32% | 49.90% | 12,628 |
 | Storm Spirit | -1.34% | 50.74% | 26,123 |
 | Void Spirit | -1.40% | 49.12% | 12,521 |
 | Juggernaut | -1.41% | 49.38% | 38,961 |
 | Wraith King | -1.48% | 45.87% | 34,521 |
 | Zeus | -1.48% | 49.77% | 33,609 |
 | Tidehunter | -1.49% | 51.44% | 12,486 |
 | Shadow Demon | -1.51% | 52.06% | 10,712 |
 | Puck | -1.84% | 52.58% | 23,215 |
| Anti-Mage | -2.07% | 53.41% | 28,520 |
| Spectre | -2.41% | 50.41% | 28,285 |
| Lifestealer | -2.44% | 50.36% | 17,709 |
| Night Stalker | -2.46% | 49.49% | 16,804 |
| Oracle | -2.76% | 50.02% | 12,258 |
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