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 | |
|---|---|---|---|
 | Monkey King | 2.76% | 50.23% |
 | Ancient Apparition | 2.71% | 45.09% |
 | Doom | 2.69% | 49.37% |
 | Troll Warlord | 2.68% | 43.78% |
 | Underlord | 2.23% | 43.78% |
| Hero | AdvantageAdv. | Hero Win Rate | |
|---|---|---|---|
 | Oracle | 2.81% | 48.92% |
 | Anti-Mage | 2.70% | 54.11% |
 | Void Spirit | 2.66% | 49.60% |
 | Abaddon | 2.31% | 47.29% |
 | Arc Warden | 2.29% | 47.95% |
| Hero | DisadvantageDis. | IoHero Win Rate | Matches Played | |
|---|---|---|---|---|
| Monkey King | 2.76% | 50.23% | 31,723 |
| Ancient Apparition | 2.71% | 45.09% | 31,588 |
| Doom | 2.69% | 49.37% | 14,062 |
| Troll Warlord | 2.68% | 43.78% | 26,092 |
| Underlord | 2.23% | 43.78% | 16,844 |
 | Marci | 2.08% | 48.63% | 19,487 |
 | Razor | 1.91% | 48.97% | 20,565 |
 | Kunkka | 1.88% | 52.42% | 12,918 |
 | Windranger | 1.79% | 47.96% | 41,756 |
 | Terrorblade | 1.79% | 53.88% | 10,824 |
 | Crystal Maiden | 1.77% | 47.00% | 49,218 |
 | Beastmaster | 1.76% | 51.25% | 8,099 |
 | Dark Willow | 1.76% | 45.70% | 36,809 |
 | Pangolier | 1.72% | 53.08% | 10,367 |
 | Sven | 1.72% | 50.23% | 12,540 |
 | Slardar | 1.70% | 47.87% | 35,346 |
 | Death Prophet | 1.66% | 51.60% | 10,192 |
 | Earthshaker | 1.61% | 48.78% | 42,420 |
 | Dragon Knight | 1.52% | 46.51% | 38,581 |
 | Shadow Fiend | 1.50% | 46.78% | 95,084 |
 | Luna | 1.45% | 49.50% | 22,120 |
 | Magnus | 1.45% | 53.44% | 25,777 |
 | Keeper of the Light | 1.42% | 51.62% | 11,288 |
 | Batrider | 1.39% | 55.74% | 5,976 |
 | Enigma | 1.35% | 46.16% | 15,892 |
 | Elder Titan | 1.25% | 46.56% | 6,476 |
 | Primal Beast | 1.22% | 48.77% | 14,064 |
 | Viper | 1.13% | 51.25% | 22,350 |
 | Techies | 1.12% | 52.31% | 36,366 |
 | Mirana | 1.11% | 51.91% | 18,174 |
 | Gyrocopter | 1.11% | 50.94% | 17,631 |
 | Jakiro | 1.10% | 47.43% | 49,087 |
 | Lone Druid | 1.09% | 47.28% | 6,740 |
 | Broodmother | 1.06% | 48.90% | 12,629 |
 | Medusa | 1.05% | 46.47% | 12,536 |
 | Dazzle | 1.02% | 49.86% | 36,764 |
 | Disruptor | 0.99% | 48.10% | 29,812 |
 | Sand King | 0.90% | 47.69% | 29,261 |
 | Undying | 0.86% | 45.20% | 31,509 |
 | Vengeful Spirit | 0.85% | 46.50% | 53,350 |
 | Huskar | 0.76% | 50.47% | 15,890 |
 | Lich | 0.74% | 44.30% | 40,662 |
 | Ogre Magi | 0.73% | 47.08% | 58,348 |
 | Drow Ranger | 0.67% | 48.64% | 43,056 |
 | Dark Seer | 0.64% | 45.13% | 15,989 |
 | Enchantress | 0.58% | 52.56% | 13,192 |
 | Tusk | 0.54% | 54.61% | 13,338 |
 | Lina | 0.54% | 51.83% | 37,827 |
 | Phantom Assassin | 0.54% | 50.80% | 53,680 |
 | Bristleback | 0.52% | 51.68% | 25,598 |
 | Queen of Pain | 0.44% | 51.39% | 21,017 |
 | Ursa | 0.44% | 48.35% | 43,081 |
 | Snapfire | 0.43% | 52.30% | 17,897 |
 | Winter Wyvern | 0.40% | 47.66% | 21,084 |
 | Leshrac | 0.34% | 45.62% | 17,323 |
 | Mars | 0.31% | 51.90% | 22,856 |
 | Faceless Void | 0.29% | 50.16% | 33,953 |
 | Omniknight | 0.29% | 51.69% | 8,727 |
 | Dawnbreaker | 0.27% | 49.10% | 14,412 |
 | Treant Protector | 0.24% | 47.35% | 18,196 |
 | Outworld Destroyer | 0.15% | 46.52% | 22,188 |
 | Witch Doctor | 0.11% | 46.26% | 81,068 |
 | Ember Spirit | 0.09% | 48.86% | 21,441 |
 | Weaver | 0.08% | 47.53% | 49,469 |
 | Chaos Knight | 0.06% | 47.14% | 37,294 |
 | Lycan | 0.05% | 50.27% | 11,306 |
 | Nature's Prophet | 0.03% | 55.53% | 24,990 |
 | Bounty Hunter | 0.02% | 46.98% | 28,748 |
 | Grimstroke | 0.01% | 50.24% | 23,167 |
 | Venomancer | 0.00% | 47.89% | 44,331 |
 | Morphling | -0.05% | 56.90% | 16,079 |
 | Tiny | -0.05% | 48.26% | 50,822 |
 | Bane | -0.07% | 50.27% | 12,627 |
 | Slark | -0.07% | 51.29% | 34,226 |
 | Pugna | -0.13% | 52.29% | 17,449 |
 | Muerta | -0.17% | 52.35% | 11,125 |
 | Riki | -0.19% | 48.78% | 19,196 |
 | Visage | -0.19% | 47.07% | 7,924 |
 | Hoodwink | -0.31% | 50.26% | 54,322 |
 | Warlock | -0.33% | 44.60% | 39,183 |
 | Clockwerk | -0.34% | 47.49% | 23,936 |
 | Rubick | -0.40% | 50.92% | 61,482 |
 | Alchemist | -0.41% | 49.22% | 13,746 |
 | Nyx Assassin | -0.41% | 49.72% | 26,295 |
 | Lion | -0.42% | 50.91% | 88,010 |
 | Templar Assassin | -0.43% | 50.08% | 46,216 |
 | Sniper | -0.46% | 51.89% | 57,021 |
 | Spirit Breaker | -0.50% | 47.25% | 60,389 |
 | Axe | -0.51% | 45.81% | 76,780 |
 | Pudge | -0.55% | 47.26% | 125,314 |
 | Meepo | -0.56% | 50.13% | 10,564 |
 | Silencer | -0.57% | 46.39% | 40,015 |
 | Shadow Demon | -0.57% | 52.07% | 9,861 |
 | Earth Spirit | -0.58% | 52.91% | 11,680 |
 | Zeus | -0.58% | 48.28% | 61,597 |
 | Legion Commander | -0.62% | 47.37% | 65,816 |
 | Timbersaw | -0.64% | 51.78% | 28,745 |
 | Naga Siren | -0.69% | 51.22% | 7,124 |
 | Shadow Shaman | -0.74% | 46.32% | 67,854 |
 | Phoenix | -0.75% | 49.03% | 28,549 |
 | Tidehunter | -0.78% | 52.11% | 17,212 |
 | Chen | -0.83% | 56.91% | 2,437 |
 | Phantom Lancer | -0.84% | 46.41% | 35,188 |
 | Wraith King | -0.98% | 44.99% | 63,355 |
 | Puck | -1.26% | 53.92% | 14,317 |
 | Bloodseeker | -1.31% | 50.74% | 11,552 |
 | Centaur Warrunner | -1.47% | 47.57% | 37,516 |
 | Tinker | -1.51% | 55.44% | 19,054 |
 | Invoker | -1.55% | 54.80% | 55,592 |
 | Spectre | -1.69% | 53.52% | 19,347 |
 | Brewmaster | -1.77% | 50.03% | 5,271 |
 | Lifestealer | -1.78% | 47.32% | 48,199 |
 | Skywrath Mage | -1.80% | 48.83% | 32,394 |
 | Necrophos | -1.83% | 48.09% | 39,709 |
 | Clinkz | -1.92% | 49.62% | 25,665 |
 | Juggernaut | -2.00% | 48.95% | 71,435 |
 | Night Stalker | -2.05% | 47.53% | 29,552 |
 | Storm Spirit | -2.24% | 51.02% | 45,381 |
| Arc Warden | -2.29% | 47.95% | 16,160 |
| Abaddon | -2.31% | 47.29% | 21,073 |
| Void Spirit | -2.66% | 49.60% | 22,233 |
| Anti-Mage | -2.70% | 54.11% | 38,487 |
| Oracle | -2.81% | 48.92% | 20,993 |
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