

This will vary because unlike other stat sites we include 100% of a brackets champions played and never include champions that don't belong in the bracket.
Iron Champions Analysed: 6,421,511
We include 100% of the champions played of every selected tier bracket in our analysis, we never include champions from outside the tier quoted tier.


Karthus Counters
Karthus jungle vs support Counters
Karthus jungle on Patch 15.11 is the strongest counter to support champions of Rakan, Seraphine & Senna. While Karthus jungle is countered most by support champions of Zyra, Blitzcrank & Lulu. Below is a detailed breakdown of Karthus jungle counters against support champions with a minimum of 100 games.


Zyra
Rise of the Thorns
Karthus wins against Zyra 38.85% of the time which is 11.20% lower against Zyra than the average opponent.
After normalising both champions win rates Karthus wins against Zyra 5.63% less often than would be expected.
The average opponent winrate against Zyra is 50.05%.


Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 39.80% of the time which is 12.71% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 7.14% less often than would be expected.
The average opponent winrate against Blitzcrank is 52.51%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 41.77% of the time which is 11.53% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 5.96% less often than would be expected.
The average opponent winrate against Lulu is 53.30%.


Xerath
the Magus Ascendant
Karthus wins against Xerath 43.38% of the time which is 7.62% lower against Xerath than the average opponent.
After normalising both champions win rates Karthus wins against Xerath 2.05% less often than would be expected.
The average opponent winrate against Xerath is 51.00%.


Vel'Koz
the Eye of the Void
Karthus wins against Vel'Koz 43.48% of the time which is 7.59% lower against Vel'Koz than the average opponent.
After normalising both champions win rates Karthus wins against Vel'Koz 2.02% less often than would be expected.
The average opponent winrate against Vel'Koz is 51.07%.


Pantheon
the Unbreakable Spear
Karthus wins against Pantheon 44.77% of the time which is 6.44% lower against Pantheon than the average opponent.
After normalising both champions win rates Karthus wins against Pantheon 0.87% less often than would be expected.
The average opponent winrate against Pantheon is 51.21%.


Swain
the Noxian Grand General
Karthus wins against Swain 44.79% of the time which is 5.86% lower against Swain than the average opponent.
After normalising both champions win rates Karthus wins against Swain 0.29% less often than would be expected.
The average opponent winrate against Swain is 50.65%.


Lux
the Lady of Luminosity
Karthus wins against Lux 44.83% of the time which is 6.10% lower against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 0.53% less often than would be expected.
The average opponent winrate against Lux is 50.93%.


Tahm Kench
The River King
Karthus wins against Tahm Kench 44.92% of the time which is 7.37% lower against Tahm Kench than the average opponent.
After normalising both champions win rates Karthus wins against Tahm Kench 1.80% less often than would be expected.
The average opponent winrate against Tahm Kench is 52.29%.


Malphite
Shard of the Monolith
Karthus wins against Malphite 44.92% of the time which is 7.22% lower against Malphite than the average opponent.
After normalising both champions win rates Karthus wins against Malphite 1.65% less often than would be expected.
The average opponent winrate against Malphite is 52.14%.


Brand
the Burning Vengeance
Karthus wins against Brand 45.56% of the time which is 5.23% lower against Brand than the average opponent.
After normalising both champions win rates Karthus wins against Brand 0.34% more often than would be expected.
The average opponent winrate against Brand is 50.79%.


Morgana
the Fallen
Karthus wins against Morgana 45.99% of the time which is 4.72% lower against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 0.85% more often than would be expected.
The average opponent winrate against Morgana is 50.71%.


Rell
the Iron Maiden
Karthus wins against Rell 46.08% of the time which is 3.75% lower against Rell than the average opponent.
After normalising both champions win rates Karthus wins against Rell 1.82% more often than would be expected.
The average opponent winrate against Rell is 49.83%.


Leona
the Radiant Dawn
Karthus wins against Leona 46.21% of the time which is 4.24% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 1.33% more often than would be expected.
The average opponent winrate against Leona is 50.45%.


Soraka
the Starchild
Karthus wins against Soraka 47.12% of the time which is 3.66% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 1.91% more often than would be expected.
The average opponent winrate against Soraka is 50.78%.


Thresh
the Chain Warden
Karthus wins against Thresh 47.17% of the time which is 5.21% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 0.36% more often than would be expected.
The average opponent winrate against Thresh is 52.38%.


Sona
Maven of the Strings
Karthus wins against Sona 47.29% of the time which is 3.31% lower against Sona than the average opponent.
After normalising both champions win rates Karthus wins against Sona 2.26% more often than would be expected.
The average opponent winrate against Sona is 50.60%.


Nami
the Tidecaller
Karthus wins against Nami 47.67% of the time which is 2.36% lower against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 3.21% more often than would be expected.
The average opponent winrate against Nami is 50.03%.


Karma
the Enlightened One
Karthus wins against Karma 47.83% of the time which is 5.36% lower against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 0.21% more often than would be expected.
The average opponent winrate against Karma is 53.19%.


Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 48.64% of the time which is 5.74% lower against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 0.18% less often than would be expected.
The average opponent winrate against Pyke is 54.38%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 48.74% of the time which is 3.58% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 1.99% more often than would be expected.
The average opponent winrate against Nautilus is 52.32%.


Neeko
the Curious Chameleon
Karthus wins against Neeko 49.42% of the time which is 3.77% lower against Neeko than the average opponent.
After normalising both champions win rates Karthus wins against Neeko 1.80% more often than would be expected.
The average opponent winrate against Neeko is 53.19%.


Braum
the Heart of the Freljord
Karthus wins against Braum 50.72% of the time which is 0.52% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 5.05% more often than would be expected.
The average opponent winrate against Braum is 51.24%.


Mel
the Soul's Reflection
Karthus wins against Mel 50.88% of the time which is 2.97% lower against Mel than the average opponent.
After normalising both champions win rates Karthus wins against Mel 2.60% more often than would be expected.
The average opponent winrate against Mel is 53.85%.


Yuumi
the Magical Cat
Karthus wins against Yuumi 51.04% of the time which is 4.11% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 1.45% more often than would be expected.
The average opponent winrate against Yuumi is 55.15%.


Seraphine
the Starry-Eyed Songstress
Karthus wins against Seraphine 52.56% of the time which is 0.30% lower against Seraphine than the average opponent.
After normalising both champions win rates Karthus wins against Seraphine 5.27% more often than would be expected.
The average opponent winrate against Seraphine is 52.86%.


Senna
the Redeemer
Karthus wins against Senna 52.56% of the time which is 1.39% lower against Senna than the average opponent.
After normalising both champions win rates Karthus wins against Senna 4.18% more often than would be expected.
The average opponent winrate against Senna is 53.95%.


Rakan
The Charmer
Karthus wins against Rakan 54.13% of the time which is 1.97% higher against Rakan than the average opponent.
After normalising both champions win rates Karthus wins against Rakan 7.54% more often than would be expected.
The average opponent winrate against Rakan is 52.16%.