Wattaildragon
Level 6 LIGHT/Dragon Normal2500 ATK / 1000 DEF
Capable of indefinite flight. Attacks by wrapping its body with electricity and ramming into opponents.
IMPORTANT: Capturing the "Wattaildragon" is forbidden by the Ancient Rules and is a Level 6 offense, the minimum sentence for which is imprisonment for no less than 2500 heliocycles.
Wattberyx
Level 3 LIGHT/Thunder Tuner Effect300 ATK / 0 DEF
When this card inflicts Battle Damage to your opponent by a direct attack, discard 1 random card from your opponent's hand.
Wattbetta
Level 2 LIGHT/Thunder Tuner Effect100 ATK / 0 DEF
When this card inflicts Battle Damage to your opponent by a direct attack, your opponent discards 1 card of their choice.
Wattcancel
Counter TrapWhen your opponent would Normal or Special Summon a monster: Discard 1 "Watt" monster; negate the Summon and destroy it.
Wattcannon
Continuous TrapOnce per turn, when a Level 4 or lower Thunder-Type monster(s) is Normal or Special Summoned to the field, inflict 600 damage to your opponent.
Wattcastle
Field SpellAny monster that attacks a "Watt" monster loses 1000 ATK after damage calculation.
Wattchimera
Level 6 LIGHT/Thunder Synchro Effect1400 ATK / 1200 DEF
1 "Watt" Tuner + 1 or more non-Tuner Thunder-Type monsters
This card can attack your opponent directly. When this card inflicts Battle Damage to your opponent by a direct attack, place 1 random card from your opponent's hand on top of their Deck.
Wattcine
Continuous SpellWhen a Thunder-Type monster you control inflicts Battle Damage to your opponent, gain Life Points equal to the damage inflicted.
Wattcobra
Level 4 LIGHT/Thunder Effect1000 ATK / 500 DEF
This card can attack your opponent directly. When this card inflicts Battle Damage to your opponent by a direct attack: Add 1 "Watt" monster from your Deck to your hand.
Wattcube
Equip SpellEquip only to a Thunder-Type monster. It gains 100 ATK for each Thunder-Type monster in your Graveyard. You can send this face-up card from the field to the Graveyard to have 1 face-up Thunder-Type monster you control gain 1000 ATK.
Wattdragonfly
Level 2 LIGHT/Thunder Effect900 ATK / 100 DEF
If this card is destroyed by your opponent's card (either by battle or by card effect), you can Special Summon 1 "Watt" monster from your Deck.
Wattfox
Level 2 LIGHT/Thunder Tuner Effect800 ATK / 100 DEF
If this card is destroyed by your opponent's card (either by battle or by card effect), your opponent cannot Special Summon a monster, or activate Spells, Traps, Spell/Trap effects, or Monster Card effects, for the rest of this turn.
Wattgiraffe
Level 4 LIGHT/Thunder Effect1200 ATK / 100 DEF
This card can attack your opponent directly. If this card inflicts battle damage to your opponent by a direct attack: Your opponent cannot activate cards or effects until the end of this turn.
Watthopper
Level 1 LIGHT/Thunder Effect0 ATK / 0 DEF
Your opponent cannot select another face-up "Watt" monster as an attack target, or target them with card effects.
Watthydra
Level 7 LIGHT/Thunder Synchro Effect1500 ATK / 1500 DEF
1 "Watt" Tuner + 1 or more non-Tuner Thunder-Type monsters
This card can attack your opponent directly. When this card inflicts Battle Damage to your opponent by a direct attack, choose 1 card in your Deck and remove it from play. Add that card to your hand during your 2nd Standby Phase after activating this effect.
Wattjustment
Equip SpellEquip only to a Level 3 or lower Thunder-Type monster. It gains 800 ATK, also its effects are negated. Each time it inflicts battle damage to your opponent: Draw 1 card.
Wattkeeper
Normal TrapSelect 1 Level 4 or lower "Watt" monster in your Graveyard. Special Summon that monster from the Graveyard. Destroy it during the End Phase.
Wattkey
Normal SpellFace-up "Watt" monsters you control can attack your opponent directly this turn.
Wattkid
Level 3 LIGHT/Thunder Normal1000 ATK / 500 DEF
A creature that electrocutes opponents with bolts of lightning.
Wattkinetic Puppeteer
Level 4 LIGHT/Psychic Effect1800 ATK / 0 DEF
(Quick Effect): You can send this card from your hand or field to the GY, then target 1 monster your opponent controls; move that target to another of their Main Monster Zones.
Wattkingdom
Continuous SpellYour opponent cannot activate the effects of a monster that activate when it is Normal or Special Summoned, while in the same column as this card or a "Watt" monster you control. You can target 1 "Watt" monster you control; Special Summon 1 "Watt" monster with a different name from your Deck, then you lose LP equal to the Special Summoned monster's ATK, also you cannot Special Summon for the rest of this turn, except Thunder monsters. You can only use this effect of "Wattkingdom" once per turn.
Wattkiwi
Level 3 LIGHT/Thunder Tuner Effect600 ATK / 100 DEF
"Watt" monsters you control cannot be destroyed by battle while they are attacking.
Wattkyuki
Level 8 LIGHT/Thunder Synchro Effect1600 ATK / 1700 DEF
1 "Watt" Tuner + 1+ non-Tuner Thunder monsters
This card can attack directly. When this card inflicts battle damage to your opponent by a direct attack: You can shuffle both 1 "Watt" Tuner from your GY and 1 face-up non-Tuner Thunder monster you control into the Deck, and if you do, Special Summon 1 "Watt" Synchro Monster from your Extra Deck, except "Wattkyuki". You can only use this effect of "Wattkyuki" once per turn.
Wattlemur
Level 2 LIGHT/Thunder Effect800 ATK / 100 DEF
If this card in its owner's possession is destroyed by your opponent's card (either by battle or by card effect): Your opponent cannot conduct their Battle Phase during their next turn.
Wattmole
Level 3 LIGHT/Thunder Effect0 ATK / 100 DEF
This card can attack twice during each Battle Phase. If this card attacks a face-down Defense Position monster, you can destroy that monster immediately with this card's effect without flipping it face-up or applying damage calculation.
Wattpheasant
Level 4 LIGHT/Thunder Effect1000 ATK / 800 DEF
This card can attack your opponent directly. When this card inflicts Battle Damage to your opponent by a direct attack, select 1 face-up monster on the field and remove it from play until the End Phase of this turn.
Wattrain
Normal SpellAdd "Watt" cards with different names from your Deck to your hand, except "Wattrain", up to the number of Thunder monsters you control with different names. During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY; Special Summon as many "Watt" monsters as possible with different names from your hand. You can only use each effect of "Wattrain" once per turn.
Wattsquirrel
Level 3 LIGHT/Thunder Effect700 ATK / 100 DEF
This card can attack twice during each Battle Phase. If this card battles, negate the effects of the monster it battled, after damage calculation (including in the Graveyard).
Wattsychic Fighter
Level 3 LIGHT/Psychic Effect1500 ATK / 300 DEF
When this card is Normal or Special Summoned: You can target 1 card in your opponent's Graveyard; place it on either the top or bottom of their Deck. You can only use this effect of "Wattsychic Fighter" once per turn.
Wattsychic Fighting Porter
Quick-Play SpellSpecial Summon up to 2 Level 3 or lower LIGHT monsters from your hand. If you Summoned 2 monsters with the same original Type, those monsters can attack directly this turn. If they have the same original Level, they also cannot be destroyed by battle this turn. You can only activate 1 "Wattsychic Fighting Porter" per turn.
Wattuna
Level 4 LIGHT/Thunder Tuner Effect800 ATK / 700 DEF
This card can attack directly. You can only use each of the following effects of "Wattuna" once per turn. At the end of the Damage Step, if your monster inflicts battle damage to your opponent: You can Special Summon this card from your hand. When this card inflicts battle damage to your opponent by a direct attack: You can Tribute this card on the field and 1 or more non-Tuner monsters from your hand and/or face-up field, and Special Summon 1 "Watt" Synchro Monster from your Extra Deck whose Level equals the total Levels of those Tributed monsters.
Wattwoodpecker
Level 3 LIGHT/Thunder Effect1000 ATK / 100 DEF
This card can attack twice during each Battle Phase. Any monster that battles with this card cannot change its battle position.