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 | |
|---|---|---|---|
 | Ancient Apparition | 3.30% | 46.01% |
 | Troll Warlord | 2.88% | 47.97% |
 | Windranger | 2.43% | 55.52% |
 | Earthshaker | 2.39% | 49.56% |
 | Marci | 2.26% | 49.39% |
| Hero | AdvantageAdv. | Hero Win Rate | |
|---|---|---|---|
 | Spectre | 3.04% | 51.00% |
 | Oracle | 2.97% | 51.34% |
 | Enchantress | 2.42% | 55.62% |
 | Bloodseeker | 2.24% | 48.95% |
 | Abaddon | 2.14% | 47.07% |
| Hero | DisadvantageDis. | IoHero Win Rate | Matches Played | |
|---|---|---|---|---|
| Ancient Apparition | 3.30% | 46.01% | 24,403 |
| Troll Warlord | 2.88% | 47.97% | 12,856 |
| Windranger | 2.43% | 55.52% | 25,407 |
| Earthshaker | 2.39% | 49.56% | 62,804 |
| Marci | 2.26% | 49.39% | 22,862 |
 | Luna | 2.25% | 52.83% | 12,332 |
 | Dark Willow | 2.21% | 49.94% | 22,375 |
 | Magnus | 2.10% | 50.30% | 38,209 |
 | Kunkka | 2.03% | 50.86% | 10,921 |
 | Naga Siren | 1.98% | 53.36% | 3,570 |
 | Underlord | 1.96% | 48.34% | 8,079 |
 | Winter Wyvern | 1.89% | 48.97% | 11,436 |
 | Monkey King | 1.83% | 53.93% | 20,613 |
 | Dark Seer | 1.83% | 49.43% | 4,050 |
 | Shadow Fiend | 1.72% | 52.07% | 56,065 |
 | Faceless Void | 1.65% | 53.79% | 18,792 |
 | Terrorblade | 1.63% | 52.83% | 13,835 |
 | Dragon Knight | 1.60% | 50.60% | 28,875 |
 | Slardar | 1.53% | 50.19% | 18,112 |
 | Lich | 1.51% | 44.33% | 70,352 |
 | Techies | 1.47% | 52.78% | 30,723 |
 | Sven | 1.46% | 54.00% | 7,704 |
 | Enigma | 1.45% | 49.44% | 14,017 |
 | Muerta | 1.40% | 52.06% | 10,403 |
 | Mirana | 1.34% | 53.99% | 10,786 |
 | Mars | 1.32% | 52.12% | 17,943 |
 | Elder Titan | 1.31% | 48.14% | 4,801 |
 | Crystal Maiden | 1.30% | 49.05% | 42,723 |
 | Death Prophet | 1.29% | 50.57% | 7,734 |
 | Weaver | 1.27% | 51.22% | 19,430 |
 | Disruptor | 1.19% | 49.52% | 17,814 |
 | Venomancer | 1.07% | 50.60% | 28,942 |
 | Slark | 1.04% | 50.57% | 29,697 |
 | Tiny | 1.00% | 51.85% | 23,908 |
 | Treant Protector | 1.00% | 51.67% | 10,009 |
 | Medusa | 0.97% | 47.69% | 19,998 |
 | Hoodwink | 0.96% | 53.81% | 33,315 |
 | Witch Doctor | 0.94% | 48.34% | 62,592 |
 | Razor | 0.93% | 49.13% | 17,798 |
 | Primal Beast | 0.92% | 53.57% | 8,404 |
 | Phantom Lancer | 0.86% | 52.20% | 13,180 |
 | Undying | 0.84% | 48.40% | 25,581 |
 | Bristleback | 0.83% | 50.52% | 34,387 |
 | Viper | 0.83% | 50.69% | 23,072 |
 | Batrider | 0.83% | 56.19% | 5,318 |
 | Lina | 0.82% | 49.44% | 73,496 |
 | Templar Assassin | 0.80% | 55.93% | 19,683 |
 | Broodmother | 0.76% | 49.13% | 15,752 |
 | Drow Ranger | 0.75% | 49.41% | 47,066 |
 | Snapfire | 0.74% | 54.52% | 12,675 |
 | Jakiro | 0.66% | 50.05% | 35,303 |
 | Ember Spirit | 0.63% | 52.45% | 10,608 |
 | Dazzle | 0.61% | 52.25% | 33,452 |
 | Vengeful Spirit | 0.58% | 49.43% | 28,249 |
 | Bane | 0.55% | 50.88% | 7,083 |
 | Tusk | 0.51% | 54.20% | 15,197 |
 | Outworld Destroyer | 0.50% | 48.69% | 17,025 |
 | Ursa | 0.50% | 51.52% | 33,028 |
 | Sand King | 0.46% | 50.22% | 14,815 |
 | Gyrocopter | 0.37% | 52.66% | 13,544 |
 | Doom | 0.34% | 54.06% | 13,157 |
 | Phantom Assassin | 0.32% | 50.07% | 77,673 |
 | Omniknight | 0.26% | 51.85% | 4,878 |
 | Dawnbreaker | 0.14% | 48.68% | 26,183 |
 | Sniper | 0.13% | 52.21% | 62,128 |
 | Beastmaster | 0.09% | 53.18% | 11,753 |
 | Kez | 0.08% | 51.36% | 18,264 |
 | Ogre Magi | 0.06% | 49.65% | 54,968 |
 | Pangolier | 0.03% | 54.50% | 6,253 |
 | Chaos Knight | -0.04% | 51.21% | 13,081 |
 | Legion Commander | -0.10% | 48.21% | 59,738 |
 | Grimstroke | -0.14% | 51.94% | 16,504 |
 | Alchemist | -0.17% | 51.30% | 25,836 |
 | Silencer | -0.19% | 47.99% | 26,754 |
 | Shadow Shaman | -0.19% | 48.42% | 47,935 |
 | Leshrac | -0.21% | 51.50% | 6,221 |
 | Axe | -0.24% | 48.77% | 61,424 |
 | Bounty Hunter | -0.25% | 50.26% | 23,262 |
 | Spirit Breaker | -0.25% | 49.96% | 42,545 |
 | Lion | -0.30% | 51.62% | 93,827 |
 | Meepo | -0.33% | 52.14% | 6,899 |
 | Keeper of the Light | -0.37% | 53.98% | 8,492 |
 | Tidehunter | -0.45% | 49.97% | 21,448 |
 | Tinker | -0.46% | 53.77% | 12,320 |
 | Clinkz | -0.49% | 51.08% | 14,016 |
 | Nature's Prophet | -0.49% | 56.25% | 25,625 |
 | Lone Druid | -0.54% | 49.77% | 7,199 |
 | Warlock | -0.55% | 48.26% | 24,267 |
 | Riki | -0.65% | 50.68% | 15,955 |
 | Ringmaster | -0.70% | 53.71% | 8,685 |
 | Rubick | -0.70% | 54.49% | 54,146 |
 | Lycan | -0.73% | 51.48% | 10,264 |
 | Queen of Pain | -0.75% | 52.68% | 35,440 |
 | Morphling | -0.84% | 52.98% | 40,261 |
 | Visage | -0.87% | 49.43% | 8,481 |
 | Earth Spirit | -0.91% | 52.39% | 12,054 |
 | Huskar | -0.93% | 53.45% | 18,995 |
 | Pugna | -1.00% | 53.04% | 14,130 |
 | Invoker | -1.04% | 53.74% | 58,317 |
 | Brewmaster | -1.06% | 52.21% | 3,101 |
 | Pudge | -1.16% | 51.23% | 91,449 |
 | Nyx Assassin | -1.19% | 51.23% | 27,904 |
 | Necrophos | -1.23% | 49.40% | 35,879 |
 | Phoenix | -1.24% | 51.82% | 18,634 |
 | Juggernaut | -1.26% | 50.23% | 49,995 |
 | Skywrath Mage | -1.35% | 52.30% | 24,394 |
 | Storm Spirit | -1.38% | 52.22% | 23,740 |
 | Timbersaw | -1.39% | 53.39% | 28,241 |
 | Centaur Warrunner | -1.43% | 51.21% | 17,429 |
 | Shadow Demon | -1.45% | 54.15% | 12,715 |
 | Puck | -1.59% | 53.76% | 24,043 |
 | Clockwerk | -1.59% | 49.55% | 22,707 |
 | Wraith King | -1.66% | 48.87% | 34,488 |
 | Zeus | -1.67% | 51.51% | 41,788 |
 | Anti-Mage | -1.69% | 52.80% | 46,028 |
 | Arc Warden | -1.75% | 51.14% | 14,910 |
 | Lifestealer | -1.88% | 49.96% | 25,490 |
 | Void Spirit | -1.94% | 51.32% | 11,342 |
 | Chen | -2.06% | 60.09% | 1,819 |
 | Night Stalker | -2.09% | 49.95% | 18,892 |
| Abaddon | -2.14% | 47.07% | 29,401 |
| Bloodseeker | -2.24% | 48.95% | 20,285 |
| Enchantress | -2.42% | 55.62% | 8,508 |
| Oracle | -2.97% | 51.34% | 15,089 |
| Spectre | -3.04% | 51.00% | 56,102 |
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