Penetrate

"Penetrate" (貫通 Kantsū) is an aggressive Keyword that lets you deal damage when you attack and destroy the opponent's monsters in the center.

It is marked by the text: 

Size 3

 * Commandant of Enma Alliance, Burn Nova
 * Duel Sieger "Tempest Enforcer"
 * Ethereal Overlord, Gang the King
 * Gang the King "SD"
 * INV Fourth Omni Fire Lord, Venom Nova
 * Vehement Dragon Emperor, Super Shine
 * Gold Dragon, Abend
 * Vehement Dragon Emperor, Super Shine

Items

 * Hysteric Spear
 * Supreme Ji, Asura Demon Slay

Size 0

 * Violent Dragon, Geolga

Size 1

 * Armorknight Fairy

Size 2

 * Armorknight Dragon, "Earthshaker"
 * Armorknight Medusa
 * Strong Horn Dragon, Diatlus
 * Twinblade Dragon, Double Zase
 * Violent Dragon, Magnagran
 * Wasp Blast Dragon, Gigabeera

Size 3

 * Armorknight Black Drake "A"
 * Armorknight Ifrit
 * Rain Dragon Peluga
 * Super Combidragon, Brainbaltes

Size 3

 * Lamenting Black Steel, Balomdahl

Items

 * Dragon Lance, Stronghorn
 * Extreme Dragon Sword, Dragobraver
 * Jackknife "Gold Ritter"
 * Super Dragonblade, Dragoeternal

Size 0

 * Missile Bunker Dragon

Size 1

 * Awl Pike Dragon
 * Dirge Drill Dragon
 * Dragon Knight, Cromwell
 * Dragon Knight, Selim
 * Tuck Sword Dragon
 * War Hammer Dragon

Size 2

 * Bal Dragon "Bal Grand Strike!"
 * Dragon Knight, Shohashou
 * Drum Bunker Dragon, "Barrier Breaker"
 * Drum Bunker Dragon, "Spinning Lance"
 * INV Fifth Omni Dragon Lord, Hellfire Drum
 * Machaela Sword Dragon
 * Pile Bunker Dragon
 * Spike Shoulder "Blazing"
 * Super Armordragon, Drum Breaker Dragon
 * Sword Cemetery Dragon
 * Thunder Knights, Drum Bunker Dragon

Size 3

 * Blue Sky Knights Leader, Crimson Arrow Dragon
 * Dragon Knight, Spartax
 * Drum Bunker Dragon, "Dual Wield"
 * First Crimson Chieftain, Greatest General
 * Fifth Omni Armored Dragon, Giant Battle Axe Dokuju
 * Jackknife "10000"
 * Scorching Sun Dragon, Blazing Sun
 * Super Armordragon, Aura Sword Dragon
 * Super Armordragon, Masterkravis

Items

 * Flash Lance, Blitz Tiger

Size 1

 * Champion of Arena, Rouga

Size 2

 * INV Third Omni Water Lord, Dark Miserea
 * One-eyed Demon Lord, Keith Wanaid

Size 3

 * Death Master, Lelag Monarch
 * Demon Knight of Destruction, Fold Break
 * Diamond Golem, Fluud
 * Dragon Demon Lord, Arkdra
 * Guardian Dragon of the Ruins, Meteor Rain
 * Tosa Hound, Cobalt

Generic

 * Battle Deity Robo, Missile Dog

Size 2

 * Buster Bone Armor
 * Gaigrander, "Finish Form"
 * Runaway Express, Gundyzell

Size 3

 * Combitrooper, Dziem
 * Drum Bunker Robo

Items

 * Elite Sword, Mikazuki Munechika

Size 1

 * Blood Knife, Kimensai

Size 2

 * Almighty, Dokakusai
 * Wolf Masked Ninja, Benizumi

Size 3

 * First Omni Beast Lord, Ziun
 * Martial Artist, Osumi
 * Sky Rush, Garyu-oh

Items

 * Divine Spear, Gungnir

Size 1

 * Furious Unicorn

Size 2

 * Armored Dragon, Cuelebre
 * Destruction Demon, Razer Back
 * Taurus Aldebaran

Size 3

 * Colossal Sea Monster, Cetus
 * Moon Wolf, Managarmr

Size 3

 * Demon Programmer, Marbas
 * INV Second Omni Demon Lord, Death Asmodai
 * Second Omni Demon Lord, Asmodai

Size 2

 * Railgun, E Magneliaz
 * Sixth Omni Storm Lord, Variable Cord

Size 3

 * Cosmo Strada, Galaxias
 * Star Guardian, Jackknife "Full Burst"

Other

 * Evil Deity Evil Demon, Goku Yamigedo
 * Ruler of Hundred Demons, O-Yamigedo

Ancient World

 * Bare-hands Fight Dragon Emperor, Urabangas
 * Seek Dragon Emperor, Azludea
 * Underling of the Fire Lord, Ricky

Impacts

 * Drill Bunker!!

Items

 * Infinite Armament, Dangerous Cradle

Size 2

 * Armorknight Griffin "A"

Size 3

 * Armorknight Iblis

Items

 * Revenge Sickle, Avenger

Monsters

 * Hand of Muramasa, Katsukiyo

Dragon World

 * 4000 Festival!
 * Crimson Battler, Drum Bunker Dragon
 * Crimson Battler, Guns Knuckle Dragon
 * Crimson Battler, Spike Nail Dragon
 * Dragon Trust
 * Dragonic Dash
 * Dragonic Heatup
 * Enchant Wand Dragon
 * Explosive Dragon, Revolve Burst
 * Fatal Arms Dragon
 * Fifth Omni Armored Dragon, Furious Iron Kongo
 * Fifth Omni Cavalry Dragon, Ice Lance Merak
 * Fifth Omni Dragon Fist, Ablaze
 * Jackknife "Dispersal"
 * Jackknife, "Drum Bunker"
 * Machaela Sword Dragon
 * Superior Buddy
 * Thunder Knights, Sword Bunker Dragon

Dungeon World

 * Brave's Sword, Soma Sword
 * Brave, Drum
 * Dragonblade Wielding Sheila Vanna
 * Fledgling Warrior, Ocker Glaser
 * Knight of the Glory, El Quixote
 * Legendary Brave, Tasuku
 * Shadow Break Knight, Leonid
 * Silver Warrior, Quenzwei

Generic

 * Buddy Sword
 * Great Battle Deity Robo, KISIN Rakshasa

Spells

 * Arduous Training
 * Reckless Bravery......

Size 1

 * Beast Deity, Tigerthrust

Size 2

 * Card Rhino
 * Happiness By Pudding, Gao

Katana World

 * Elite Sword, Dojigiri

Legend World

 * Golden Blade, Chrysaor
 * Knights of the Round Table, Gawain
 * Knights of the Round Table, King Arthur
 * Power of Mythology
 * Sulizers Gard

Star Dragon World

 * Dragonarms, Cavalier
 * Dragonarms, Schrodinger
 * Dragonarms, Strength
 * Jackknife "Overwrite"

Darkness Dragon World

 * Black Knight, Goldred
 * Hades Knight, Goldba

Dragon World

 * Super Armordragon, Vajra Blaster Dragon

Dungeon World

 * Diamond Golem, Fluud
 * Entangle Roper
 * Legendary Warrior, Gao

Generic

 * Battle Deity Robo, Stone General

Katana World

 * Perfect Beauty, Hyoshi Shirasagi

Rulings

 * If a monster in the center area is destroyed by an opponent's monster that has Penetrate, then even if the player uses an ability to prevent that monster from leaving the field (such as Soulguard), Penetrate damage will still be dealt.
 * This ability is also possible with a Link Attack. Should the monster in the opponent's center area be destroyed by a Link Attack, damage will be dealt to the opponent fighter from the card with the 'Penetrate' ability only. If 2 or more cards in the Link Attack have Penetrate, each critical from all the cards with Penetrate will be dealt as damage seperately.
 * If the attack target of a monster with Penetrate leaves the field before it is destroyed, Penetrate damage is not dealt.
 * If a monster with Penetrate is given the Counterattack ability, and due to this Counterattack ability, it destroys an opponent's monster in the center, the opponent will not take any damage from the Penetrate ability. Penetrate requires an opponent's center monster to be attacked and destroyed for it to activate. However, Counterattack simply destroys a monster as an effect, and is not actually considered to be 'an attack.'
 * Damage dealt by penetrate is treated as ability damage not damage dealt by an attack.