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 | |
|---|---|---|---|
 | Troll Warlord | 3.27% | 45.57% |
 | Ancient Apparition | 2.74% | 45.22% |
 | Underlord | 2.73% | 45.12% |
 | Monkey King | 2.34% | 52.14% |
 | Dark Willow | 2.05% | 48.62% |
| Hero | AdvantageAdv. | Hero Win Rate | |
|---|---|---|---|
 | Spectre | 2.75% | 51.51% |
 | Oracle | 2.73% | 50.13% |
 | Anti-Mage | 2.41% | 52.90% |
 | Arc Warden | 2.15% | 50.34% |
 | Void Spirit | 2.01% | 50.68% |
| Hero | DisadvantageDis. | IoHero Win Rate | Matches Played | |
|---|---|---|---|---|
| Troll Warlord | 3.27% | 45.57% | 202,435 |
| Ancient Apparition | 2.74% | 45.22% | 299,215 |
| Underlord | 2.73% | 45.12% | 132,173 |
| Monkey King | 2.34% | 52.14% | 301,311 |
| Dark Willow | 2.05% | 48.62% | 235,643 |
 | Doom | 1.76% | 51.69% | 152,286 |
 | Windranger | 1.75% | 50.79% | 375,358 |
 | Crystal Maiden | 1.74% | 48.01% | 461,145 |
 | Marci | 1.73% | 49.57% | 246,809 |
 | Kunkka | 1.68% | 49.33% | 166,928 |
 | Earthshaker | 1.66% | 49.15% | 557,182 |
 | Slardar | 1.63% | 48.50% | 265,012 |
 | Sven | 1.59% | 50.12% | 154,099 |
 | Dragon Knight | 1.56% | 48.72% | 330,548 |
 | Shadow Fiend | 1.37% | 49.33% | 711,740 |
 | Magnus | 1.31% | 50.81% | 358,889 |
 | Winter Wyvern | 1.30% | 47.82% | 184,768 |
 | Luna | 1.25% | 49.08% | 285,885 |
 | Viper | 1.20% | 49.62% | 260,314 |
 | Techies | 1.17% | 52.02% | 337,099 |
 | Batrider | 1.09% | 55.75% | 54,435 |
 | Terrorblade | 1.07% | 52.81% | 130,568 |
 | Elder Titan | 1.07% | 47.96% | 61,721 |
 | Mars | 1.02% | 51.60% | 234,029 |
 | Venomancer | 1.02% | 49.14% | 316,242 |
 | Lich | 1.00% | 45.02% | 478,560 |
 | Enigma | 0.99% | 49.16% | 154,514 |
 | Broodmother | 0.96% | 49.12% | 149,325 |
 | Primal Beast | 0.94% | 51.11% | 127,895 |
 | Disruptor | 0.94% | 48.47% | 248,620 |
 | Razor | 0.92% | 49.13% | 212,674 |
 | Sand King | 0.90% | 48.00% | 250,835 |
 | Leshrac | 0.83% | 48.08% | 124,098 |
 | Death Prophet | 0.77% | 50.48% | 101,149 |
 | Drow Ranger | 0.75% | 48.81% | 451,253 |
 | Lone Druid | 0.75% | 48.50% | 77,882 |
 | Jakiro | 0.75% | 48.59% | 490,264 |
 | Dark Seer | 0.71% | 47.10% | 105,420 |
 | Undying | 0.69% | 47.34% | 276,488 |
 | Vengeful Spirit | 0.68% | 47.82% | 372,596 |
 | Dazzle | 0.67% | 50.48% | 364,944 |
 | Hoodwink | 0.66% | 51.79% | 462,679 |
 | Gyrocopter | 0.65% | 51.77% | 159,680 |
 | Muerta | 0.65% | 51.81% | 125,950 |
 | Keeper of the Light | 0.64% | 52.49% | 102,969 |
 | Weaver | 0.64% | 49.69% | 329,997 |
 | Lina | 0.63% | 51.14% | 492,639 |
 | Witch Doctor | 0.60% | 47.31% | 685,794 |
 | Faceless Void | 0.58% | 52.21% | 273,480 |
 | Mirana | 0.57% | 52.47% | 185,822 |
 | Pangolier | 0.51% | 53.38% | 107,280 |
 | Bristleback | 0.51% | 50.45% | 336,889 |
 | Phantom Lancer | 0.51% | 49.77% | 200,792 |
 | Tiny | 0.49% | 50.48% | 364,080 |
 | Chaos Knight | 0.43% | 49.62% | 204,846 |
 | Treant Protector | 0.42% | 49.21% | 157,477 |
 | Ogre Magi | 0.37% | 48.46% | 551,841 |
 | Tusk | 0.35% | 53.87% | 170,236 |
 | Naga Siren | 0.34% | 52.71% | 60,954 |
 | Beastmaster | 0.30% | 52.95% | 125,230 |
 | Slark | 0.27% | 50.41% | 356,266 |
 | Ursa | 0.27% | 50.18% | 368,178 |
 | Kez | 0.26% | 52.36% | 122,127 |
 | Bounty Hunter | 0.25% | 49.00% | 253,726 |
 | Snapfire | 0.23% | 53.34% | 187,955 |
 | Phantom Assassin | 0.15% | 50.38% | 759,482 |
 | Ember Spirit | 0.15% | 50.63% | 196,871 |
 | Sniper | 0.14% | 51.07% | 659,648 |
 | Lycan | 0.08% | 50.67% | 92,431 |
 | Warlock | 0.07% | 46.25% | 307,125 |
 | Templar Assassin | 0.07% | 53.57% | 243,808 |
 | Huskar | 0.05% | 51.48% | 199,381 |
 | Medusa | 0.03% | 46.67% | 230,728 |
 | Outworld Destroyer | 0.03% | 48.19% | 198,265 |
 | Spirit Breaker | -0.20% | 49.19% | 481,162 |
 | Alchemist | -0.20% | 50.23% | 202,131 |
 | Grimstroke | -0.24% | 51.32% | 202,633 |
 | Omniknight | -0.26% | 50.35% | 100,721 |
 | Dawnbreaker | -0.27% | 49.16% | 193,787 |
 | Riki | -0.29% | 49.45% | 207,351 |
 | Axe | -0.31% | 47.69% | 647,331 |
 | Shadow Shaman | -0.34% | 47.67% | 539,784 |
 | Bane | -0.34% | 50.87% | 109,125 |
 | Legion Commander | -0.49% | 48.13% | 604,120 |
 | Lion | -0.51% | 51.20% | 905,995 |
 | Silencer | -0.55% | 48.05% | 319,641 |
 | Meepo | -0.58% | 50.71% | 89,343 |
 | Rubick | -0.58% | 52.95% | 600,707 |
 | Pudge | -0.60% | 49.73% | 1,105,709 |
 | Chen | -0.67% | 57.31% | 22,503 |
 | Enchantress | -0.77% | 53.84% | 118,279 |
 | Queen of Pain | -0.79% | 51.68% | 350,336 |
 | Pugna | -0.80% | 52.72% | 154,454 |
 | Ringmaster | -0.82% | 50.77% | 154,666 |
 | Timbersaw | -0.89% | 52.07% | 292,930 |
 | Clockwerk | -0.92% | 48.69% | 225,641 |
 | Nature's Prophet | -0.94% | 54.68% | 347,327 |
 | Necrophos | -0.94% | 48.55% | 385,981 |
 | Skywrath Mage | -0.97% | 50.34% | 290,284 |
 | Morphling | -1.00% | 53.99% | 324,140 |
 | Nyx Assassin | -1.00% | 50.36% | 277,660 |
 | Centaur Warrunner | -1.01% | 49.29% | 236,155 |
 | Clinkz | -1.02% | 50.10% | 203,145 |
 | Brewmaster | -1.04% | 51.55% | 42,855 |
 | Phoenix | -1.04% | 50.88% | 211,433 |
 | Visage | -1.05% | 49.43% | 93,410 |
 | Tidehunter | -1.15% | 50.57% | 212,341 |
 | Zeus | -1.16% | 50.14% | 498,694 |
 | Earth Spirit | -1.38% | 52.92% | 128,740 |
 | Wraith King | -1.41% | 46.42% | 450,512 |
 | Juggernaut | -1.48% | 49.52% | 539,060 |
 | Abaddon | -1.48% | 46.19% | 292,885 |
 | Storm Spirit | -1.48% | 51.77% | 288,148 |
 | Invoker | -1.49% | 53.28% | 662,573 |
 | Lifestealer | -1.65% | 48.93% | 350,252 |
 | Shadow Demon | -1.68% | 53.34% | 108,259 |
 | Puck | -1.79% | 53.39% | 240,399 |
 | Tinker | -1.85% | 52.28% | 192,568 |
 | Bloodseeker | -1.91% | 49.18% | 170,602 |
 | Night Stalker | -1.95% | 49.44% | 222,786 |
| Void Spirit | -2.01% | 50.68% | 149,267 |
| Arc Warden | -2.15% | 50.34% | 170,987 |
| Anti-Mage | -2.41% | 52.90% | 442,328 |
| Oracle | -2.73% | 50.13% | 175,855 |
| Spectre | -2.75% | 51.51% | 345,056 |
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