behavior
| Hand Size | Low LP | Critical Deck | Max Fusions | Max Improve | Spell % | Attack % |
|---|---|---|---|---|---|---|
| 16 | 2000 | 10 | 4 | 3 | 50% | 25% |
| Total Domination | Lacks Domination | ||||
|---|---|---|---|---|---|
| Combo % | Improve % | Magic % | Combo % | Improve % | Magic % |
| 40% | 30% | 30% | 20% | 60% | 20% |
| Millennium Eye | Force Field | Guardian |
|---|---|---|
| FIRST |
deck & drops
19.73%
9.77%
9.77%
9.77%
5.08%
4.88%
58.98%
17.58%
9.77%
5.86%
3.91%
simulate drop
turn 1 play
| -Card | -Max Stat | -This Card % | -Same Stat % | -Percentile | Chance ( 1 / X )This or Lower▲ | Chance ( 1 / X )This Card |
|---|---|---|---|---|---|---|
Gate Guardian | 3750 | 40.522% | 40.522% | 100.00% | 1.00 | 2.47 |
B. Skull Dragon | 3200 | 24.708% | 24.708% | 59.478% | 1.68 | 4.05 |
Wall Shadow | 3000 | 13.943% | 17.494% | 34.770% | 2.88 | 7.17 |
Millennium Shield | 3000 | 1.7756% | 17.494% | 34.770% | 2.88 | 56.32 |
Labyrinth Wall | 3000 | 1.7747% | 17.494% | 34.770% | 2.88 | 56.35 |
Gaia the Dragon Champion | 2600 | 7.6069% | 7.6069% | 17.277% | 5.79 | 13.15 |
Seiyaryu | 2500 | 3.8435% | 5.8025% | 9.6700% | 10.34 | 26.02 |
Harpie's Pet Dragon | 2500 | 1.9590% | 5.8025% | 9.6700% | 10.34 | 51.05 |
Thousand Dragon | 2400 | 0.9237% | 1.8471% | 3.8675% | 25.86 | 108.26 |
Red-eyes B. Dragon | 2400 | 0.9234% | 1.8471% | 3.8675% | 25.86 | 108.30 |
Gaia the Fierce Knight | 2300 | 0.4977% | 0.9949% | 2.0204% | 49.49 | 200.92 |
Kaiser Dragon | 2300 | 0.4972% | 0.9949% | 2.0204% | 49.49 | 201.14 |
Judge Man | 2200 | 0.1581% | 0.2374% | 1.0256% | 97.51 | 632.64 |
Illusionist Faceless Mage | 2200 | 0.0793% | 0.2374% | 1.0256% | 97.51 | 1261.30 |
Metal Guardian | 2150 | 0.0669% | 0.0669% | 0.7882% | 126.87 | 1494.48 |
Empress Judge | 2100 | 0.1009% | 0.3027% | 0.7213% | 138.64 | 991.11 |
B. Dragon Jungle King | 2100 | 0.1009% | 0.3027% | 0.7213% | 138.64 | 991.19 |
Man-eating Black Shark | 2100 | 0.0505% | 0.3027% | 0.7213% | 138.64 | 1980.66 |
30,000-Year White Turtle | 2100 | 0.0504% | 0.3027% | 0.7213% | 138.64 | 1982.27 |
Swordstalker | 2000 | 0.0413% | 0.3305% | 0.4186% | 238.90 | 2419.06 |
Rabid Horseman | 2000 | 0.0413% | 0.3305% | 0.4186% | 238.90 | 2420.94 |
Gyakutenno Megami | 2000 | 0.0413% | 0.3305% | 0.4186% | 238.90 | 2421.82 |
Nekogal #2 | 2000 | 0.0412% | 0.3305% | 0.4186% | 238.90 | 2426.44 |
Aqua Madoor | 2000 | 0.0207% | 0.3305% | 0.4186% | 238.90 | 4827.76 |
Giant Soldier of Stone | 2000 | 0.0207% | 0.3305% | 0.4186% | 238.90 | 4830.33 |
Catapult Turtle | 2000 | 0.0207% | 0.3305% | 0.4186% | 238.90 | 4831.01 |
Queen Bird | 2000 | 0.0207% | 0.3305% | 0.4186% | 238.90 | 4831.85 |
King of Yamimakai | 2000 | 0.0207% | 0.3305% | 0.4186% | 238.90 | 4841.27 |
Hercules Beetle | 2000 | 0.0206% | 0.3305% | 0.4186% | 238.90 | 4842.95 |
Parrot Dragon | 2000 | 0.0206% | 0.3305% | 0.4186% | 238.90 | 4846.66 |
Curse of Dragon | 2000 | 0.0206% | 0.3305% | 0.4186% | 238.90 | 4862.15 |
Performance of Sword | 1950 | 0.0165% | 0.0165% | 0.0881% | 1134.91 | 6065.77 |
Reaper of the Cards | 1930 | 0.0071% | 0.0071% | 0.0716% | 1396.13 | 14177.15 |
Sky Dragon | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17207.81 |
Skelgon | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17240.69 |
Tyhone #2 | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17243.60 |
Warrior of Tradition | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17307.25 |
Skullbird | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17350.18 |
Turtle Bird | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17356.21 |
Kwagar Hercules | 1900 | 0.0058% | 0.0579% | 0.0646% | 1548.63 | 17386.70 |
Rock Spirit | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34345.45 |
Metal Fish | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34394.96 |
Vermillion Sparrow | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34449.03 |
Pragtical | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34471.70 |
Kaminari Attack | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34509.37 |
Deepsea Shark | 1900 | 0.0029% | 0.0579% | 0.0646% | 1548.63 | 34576.05 |
Amphibious Bugroth | 1850 | 0.0007% | 0.0026% | 0.0067% | 14936.63 | 151337.82 |
Crow Goblin | 1850 | 0.0007% | 0.0026% | 0.0067% | 14936.63 | 151840.74 |
Giltia the D. Knight | 1850 | 0.0007% | 0.0026% | 0.0067% | 14936.63 | 152163.51 |
Metal Dragon | 1850 | 0.0007% | 0.0026% | 0.0067% | 14936.63 | 152260.61 |
Spirit of the Mountain | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 629760.60 |
Battle Steer | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 633849.96 |
Rude Kaiser | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 635538.22 |
Megasonic Eye | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 642959.18 |
Dungeon Worm | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 646443.00 |
Orion the Battle King | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 651542.37 |
Gatekeeper | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 651740.11 |
Monster Tamer | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 651740.11 |
Wing Eagle | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 652334.04 |
Kairyu-shin | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 653724.09 |
Steel Ogre Grotto #1 | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 653724.09 |
Flower Wolf | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 657728.53 |
Dice Armadillo | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 658131.67 |
Flame Swordsman | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 658333.43 |
Trent | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 658333.43 |
Giganto | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 662803.60 |
Garoozis | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 663008.23 |
Queen of Autumn Leaves | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 663622.88 |
Lava Battleguard | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 664444.20 |
Mech Bass | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 664855.62 |
Cyber Saurus | 1800 | 0.0002% | 0.0040% | 0.0041% | 24620.61 | 666299.61 |
Giant Turtle Who Feeds on Flames | 1800 | 0.0001% | 0.0040% | 0.0041% | 24620.61 | 668581.46 |
Swamp Battleguard | 1800 | 0.0001% | 0.0040% | 0.0041% | 24620.61 | 669832.70 |
Dark Witch | 1800 | 0.0001% | 0.0040% | 0.0041% | 24620.61 | 677012.50 |
Emperor of the Land and Sea | 1800 | 0.0001% | 0.0040% | 0.0041% | 24620.61 | 677867.31 |
Togex | 1800 | 0.0001% | 0.0040% | 0.0041% | 24620.61 | 694080.04 |
La Jinn the Mystical Genie | 1800 | 0.0000% | 0.0040% | 0.0041% | 24620.61 | 4793490.29 |
Beautiful Beast Trainer | 1750 | 0.0000% | 0.0000% | 0.0001% | 1139853.32 | 7895160.47 |
Leogun | 1750 | 0.0000% | 0.0000% | 0.0001% | 1139853.32 | 8323580.03 |
Musician King | 1750 | 0.0000% | 0.0000% | 0.0001% | 1139853.32 | 8521760.51 |
Peacock | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 21913098.45 |
Akihiron | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 23091222.02 |
Invader of the Throne | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 23342213.57 |
Spirit of the Winds | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 24970740.09 |
Ancient Tool | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 25264513.51 |
Zanki | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 27889398.03 |
Rainbow Marine Mermaid | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 27889398.03 |
Marine Beast | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 27889398.03 |
Cyber Soldier | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 29020049.30 |
Winged Egg of New Life | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 29020049.30 |
Mabarrel | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 29417584.22 |
Bottom Dweller | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 29826161.78 |
Ansatsu | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 153391689.10 |
Battle Ox | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 165191049.80 |
Axe Raider | 1700 | 0.0000% | 0.0000% | 0.0001% | 1948714.74 | 429496729.60 |
Guardian of the Throne Room | 1650 | 0.0000% | 0.0000% | 0.0000% | 23342213.57 | 119304647.10 |
Ocubeam | 1650 | 0.0000% | 0.0000% | 0.0000% | 23342213.57 | 153391689.10 |
Whiptail Crow | 1650 | 0.0000% | 0.0000% | 0.0000% | 23342213.57 | 153391689.10 |
Succubus Knight | 1650 | 0.0000% | 0.0000% | 0.0000% | 23342213.57 | 1073741824.00 |
Dark Chimera | 1610 | 0.0000% | 0.0000% | 0.0000% | 48806446.55 | 306783378.30 |
Fire Kraken | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 357913941.30 |
Doma The Angel of Silence | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 429496729.60 |
Misairuzame | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 429496729.60 |
Crawling Dragon | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 536870912.00 |
Hunter Spider | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 536870912.00 |
Octoberser | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 715827882.70 |
Ill Witch | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 715827882.70 |
Stone Ogre Grotto | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 1073741824.00 |
Thunder Dragon | 1600 | 0.0000% | 0.0000% | 0.0000% | 58040098.59 | 2147483648.00 |
Beaver Warrior | 1500 | 0.0000% | 0.0000% | 0.0000% | 536870912.00 | 2147483648.00 |
Kanan the Swordmistress | 1400 | 0.0000% | 0.0000% | 0.0000% | 715827882.70 | 2147483648.00 |
Tiger Axe | 1300 | 0.0000% | 0.0000% | 0.0000% | 1073741824.00 | 2147483648.00 |
Fake Trap | 0 | 0.0000% | 0.0000% | 0.0000% | 2147483648.00 | 2147483648.00 |
simulate turn 1
Frequently Asked Questions
High mage of the Meadow Shrine and one of Heishin's five elemental commanders. He guards the Millennium Eye. Fought after Meadow Mage. Kepura is one of the two hardest high mages alongside Anubisius, primarily because his Gate Guardian on Sogen reaches devastating 4250 ATK.
Difficulty: Very hard.
Threat Cards
- Gate Guardian (3750 ATK, 4250 on Sogen)
- B. Skull Dragon (3200 ATK)
- Seiyaryu (2500 ATK in Sun)
- Wall Shadow (3000 DEF, 3500 on Sogen)
Strategy
To beat Gate Guardian at 4250 ATK, you need to change the field AND equip a THTD — Umi is the best choice since it powers down no relevant types here. If Kepura does not start with Gate Guardian, he might start with Wall Shadow in defense (3500 DEF on Sogen) or B. Skull Dragon. Use Umi or Mountain to shift the field and equip your THTD. Play THTD in Pluto to be safe from Seiyaryu (2500 ATK Sun).
Notable Drops
| Rank | Cards |
|---|---|
| S/A-POW | B. Dragon Jungle King, Curse of Dragon, Kairyu-shin, Blackland Fire Dragon, Darkfire Dragon, Koumori Dragon, Baby Dragon, Wicked Dragon with the Ersatz Head, Yamatano Dragon Scroll, Petit Dragon |
| S/A-TEC | Crush Card, Bright Castle, Dark Energy, Dragon Capture Jar, Warrior Elimination, Widespread Ruin |
Farming
When defeated on S/A-POW rank, drops a wide array of Dragons. His A-TEC pool is exceptional: Widespread Ruin, Crush Card, Bright Castle, Dark Energy, Dragon Capture Jar. Worth considering A-TEC if you can consistently take the lead and have a trap to use.
Card Pages
Gate GuardianB. Skull DragonSeiyaryuWall ShadowB. Dragon Jungle KingCurse of DragonKairyu-shinBlackland Fire DragonDarkfire DragonKoumori DragonBaby DragonWicked Dragon with the Ersatz HeadYamatano Dragon ScrollPetit DragonCrush CardBright CastleDark EnergyDragon Capture JarWarrior EliminationWidespread RuinRelated Duelists
HeishinMeadow MageThe AI Behavior section displays the duelist's artificial intelligence parameters including Hand Size, Max Fusion Length, Spell Probability, Attack Probability, Low LP Threshold, Critical Deck Size, and the probability distribution for decision states under both Total Domination and Lacks Domination conditions. These values determine how aggressively or defensively the duelist plays during a match.
Some duelists have the Millennium Eye ability (Heishin, Pegasus, Heishin 2nd, Seto 3rd, DarkNite, Nitemare), allowing them to see your face-down cards. The field section shows the terrain bonus that affects certain monster types.
Learn more about AI behavior mechanicsThe swords icon next to the duelist's portrait starts a practice duel against this opponent. You can test strategies, practice farming techniques, or challenge yourself against any duelist in the game. The duel uses the duelist's actual deck, AI behavior, and field terrain.
The Deck & Drops section uses tabs to switch between viewing the duelist's Deck and their three drop pools: S,A POW, S,A TEC, and B,C,D POW/TEC. Each tab shows cards with their drop weight (out of 2048) and probability percentage.
Use the search bar to find specific cards by name, ID, type, or stats. Filter by guardian stars, card type (Monster, Magic, Equip, Trap, Ritual), or any custom group using the 'Filter by group' button.
The Simulate Drop tool lets you simulate winning a duel and seeing which cards you would receive. Select a rank (S,A POW, S,A TEC, or B,C,D), choose a quantity (1, 5, 15, or 30 drops), and click the Randomize button. Each drop is drawn from the duelist's weighted card pool, with higher-weight cards appearing more frequently.
The dropdown quantity selector multiplies the number of cards you receive from a single win — drop modes x5, x15, and x30 drastically reduce farming time compared to x1 drops.
The Turn 1 Play table shows the probability of each card the duelist can play on the first turn of a duel. The data is based on ~2 billion simulated duels per duelist, run by GMS and organized by Syura. This is not official game data but should be extremely accurate.
The bold 'This or Lower' column is the most useful metric — it shows the combined chance of the duelist starting with this card's stat or any lower stat. For example, if Kaiba has a 27% 'This or Lower' for 2000 ATK, that means there's a 27% chance he starts with 2000 ATK or less. This helps you understand how rare a particular start is.
The 'This Card %' column shows the individual probability for that specific card. The 'Same Stat %' column shows the combined chance for all cards with the same max stat. The '1 in X' column shows the rarity as '1 in X duels'.
Click column headers to sort the table. Data is not available for Duel Master K since he uses a copy of your own deck.
The Simulate Turn 1 tool randomly draws cards from the duelist's turn 1 distribution. Each card's probability of being drawn matches its 'This Card %' from the table above. Select a quantity (1, 5, 15, or 30 draws) and click the Randomize button to simulate that many starting hands.
This helps you understand what cards you're most likely to face on turn 1 when dueling this opponent. High-stat cards with larger percentages will appear more often in your simulations.
Original spreadsheet by Syura & GMS





