He regularly appears in-game once the player claims his Character Unlock Mission reward for Summoning WIND monsters 10 times, after reaching Stage 10 in Duel World (DM). Unlocking Yusei at this time also unlocks Duel World (5D's) as a result.
Blue Gate Keys are required to Duel Yusei Fudo at the Gate.
Though calm and collected, no one can deny that a burning fire rages in Yusei's heart. Through his bond of friendship and his destiny as a Signer, Yusei has saved the world countless times. His Junk Deck focuses on low Levelmonsters, but he extracts their full potential thru Synchro Summoning. His go-to monster is the Signer Dragon "Stardust Dragon".
When starting a Duel against Yugi Muto or Yami Yugi, Yusei says "Yugi, please Duel me!"
When he wins the Duel, he says "You believe in your cards just as much as I do. If not more.", followed by "Thank you for the great Duel, Yugi!"
When he loses the Duel, he says "This is why you're still the greatest Duelist to this day!"
Jaden Yuki
When starting a Duel against Jaden Yuki, Yusei says "Jaden, I know you and I will have a fun Duel!"
When he wins the Duel, he says "No matter how difficult the Duel, you faced it with a smile.", followed by "I will take that to heart, Jaden!"
When he loses the Duel, he says "So this was Jaden's Fusion strategy...", followed by "You've given me new ideas for my own tactics!"
Akiza Izinski/Crow Hogan
When starting a Duel against Akiza Izinski or Crow Hogan, Yusei says "Dueling has always set us on the right path.", followed by "So let's settle our differences in a Duel!"
When he wins the Duel, he says "No matter the outcome, we still have an unbreakable bond."
When he loses the Duel, he says "Our eternal bond gives us the courage to journey on our own."
Dark Signer Kalin Kessler
When starting a Duel against Dark Signer Kalin Kessler, Yusei says "I'll bring you back to the way you were, Kalin!"
When he wins the Duel, he says "Kalin!!"
When he loses the Duel, he says "Kalin... This isn't like you!"
Dark Signer Carly Carmine
When starting a Duel against Dark Signer Carly Carmine, Yusei says "Dark Signer! We Signers will defeat you and save the world!"
When he wins the Duel, he says "The friendship I share will overcome any fate!"
When he loses the Duel, he says "No... It can't end like this... I must believe in hope!"
Before Yusei Synchro Summons "Stardust Dragon", he announces "The hopes of the world coalesce into a single star!", followed by "Let's rev it up! Synchro Summon!" When Yusei Summons "Stardust Dragon" (by any method), a cut-in frame of Yusei briefly appears, and he announces "Take flight, Stardust Dragon!" If that player hasn't already Summoned "Stardust Dragon" during that Duel, a cutscene of "Stardust Dragon" being Summoned plays afterwards.
Most of the time when Yusei attacks with that monster, he announces "Attack, Stardust Dragon!", followed by "Cosmic Flare!"
When Yusei activates that monster's Quick Effect, he announces "I activate Stardust Dragon's effect!", followed by "Victim's Sanctuary!"
When Yusei activates that monster's Trigger Effect, he announces "I activate Stardust Dragon's effect!"
Before Yusei Synchro Summons "Junk Warrior", he announces "Even the tiniest scrap has value!", followed by "And this monster will prove it! Synchro Summon!" When Yusei Summons "Junk Warrior" (by any method), a cut-in frame of Yusei briefly appears, and he announces "Appear, Junk Warrior!"
Most of the time when Yusei attacks with that monster, he announces "Junk Warrior! Attack!", followed by "Scrap Fist!"
When Yusei activates that monster's effect, he announces "Junk Warrior gains the ATK of my Level 2 or lower monsters!", followed by "The Power of Fellowship!"
Before Yusei Synchro Summons "Junk Archer", he announces "The spirits merge to form the arrow that pierces the sky!", followed by "Synchro Summon!" When Yusei Summons "Junk Archer" (by any method), a cut-in frame of Yusei's face briefly appears, and he announces "Ready your bow, Junk Archer!"
Most of the time when Yusei attacks with that monster, he announces "Fire, Junk Archer!", followed by "Scrap Arrow!"
When Yusei activates either of that monster's effects, he announces "I activate Junk Archer's effect!", followed by "Bull's Eye Banishing!"
Before Yusei Synchro Summons "Junk Berserker", he announces "The anger rages into an unquenchable fever!", followed by "Synchro Summon!" When Yusei Summons "Junk Berserker" (by any method), a cut-in frame of Yusei's face briefly appears, and he announces "Roar! Junk Berserker!"
Most of the time when Yusei attacks with that monster, he announces "Junk Berserker! Send 'em to the scrap heap!"
When Yusei activates either of that monster's effects, he announces "Junk Berserker's effect!"
Before Yusei Synchro Summons "Gravity Warrior", he announces "Arrive from beyond the event horizon!", followed by "Synchro Summon!" When Yusei Summons "Gravity Warrior" (by any method), a cut-in frame of Yusei's face briefly appears, and he announces "Gravity Warrior!"
Most of the time when Yusei attacks with that monster, he announces "Gravity Warrior attacks!", followed by "Grand Cross!"
When Yusei activates that monster's Trigger Effect, he announces "Gravity Warrior gains ATK from the monsters on your Field!", followed by "Power Gravitation!"
When Yusei activates that monster's Quick Effect, he announces "Gravity Warrior will force your monster to attack!", followed by "Duel G Field!"
Before Yusei Synchro Summons "Stardust Charge Warrior", he announces "Ride the wind and rain with your sacred wings!", followed by "Synchro Summon!" When Yusei Summons "Stardust Charge Warrior" (by any method), a cut-in frame of Yusei's face briefly appears, and he announces "Stardust Charge Warrior!"
Most of the time when Yusei attacks with that monster, he announces "Stardust Charge Warrior attacks!", followed by "Shooting Crusher!"
When Yusei activates either of that monster's effects, he announces "Stardust Charge Warrior's effect activates!"
When Yusei Summons "Jet Synchron", he announces "Here's my Tuner Monster, Jet Synchron!"
Most of the time when Yusei attacks with that monster, he announces "Jet Synchron attacks!"
When Yusei activates either of that monster's effects, he announces "Jet Synchron's effect!"
When Yusei Summons "Junk Synchron", he announces "The Tuner Monster, Junk Synchron!"
Most of the time when Yusei attacks with that monster, he announces "Junk Synchron attacks!"
When Yusei activates that monster's effect, he announces "Junk Synchron's effect!"
When Yusei Summons "Junkuriboh", he announces "Here comes Junkuriboh!"
Most of the time when Yusei attacks with that monster, he announces "Junkuriboh attacks!"
When Yusei activates that monster's effect, he announces "I activate Junkuriboh's effect!", followed by "I send it to the Graveyard to negate and destroy your card!"
When Yusei Summons "Quickdraw Synchron", he announces "Here's the Tuner Monster, Quickdraw Synchron!"
Most of the time when Yusei attacks with that monster, he announces "Quickdraw Synchron attacks!"
When Yusei Summons "Quillbolt Hedgehog", he announces "Come, Quillbolt Hedgehog!"
Most of the time when Yusei attacks with that monster, he announces "Quillbolt Hedgehog! Stick it to 'em!"
When Yusei activates that monster's effect, he announces "When I have a Tuner, I can bring back Quillbolt Hedgehog!"
When Yusei Summons "Sonic Chick", he announces "Speed on in, Sonic Chick!"
Most of the time when Yusei attacks with that monster, he announces "Sonic Chick attacks!"
When Yusei Summons "Speed Warrior", he announces "Sprint on in, Speed Warrior!"
Most of the time when Yusei attacks with that monster, he announces "You have the green light, Speed Warrior! Attack!", followed by "Hyper Sonic Slash!"
When Yusei activates that monster's effect, he announces "I activate Speed Warrior's effect!", followed by "Its original ATK doubles until the end of the Battle Phase!"
Spells/Traps
When Yusei activates "Advance Draw", he announces "I activate my Spell Card! Advance Draw!"
When Yusei activates "Blind Spot Strike", he announces "I activate my Quick-Play Spell! Blind Spot Strike!"
When Yusei activates "Card of Sacrifice", he announces "What to do... I play my Trap Card! Card of Sacrifice!"
When Yusei activates "Cosmic Flare", he announces "My Quick-Play Spell, Cosmic Flare!"
When Yusei activates "Double Summon" or its effect, he announces "I activate the Spell Card, Double Summon!", followed by "I'm allowed to Normal Summon twice this turn!"
When Yusei activates "Defense Draw", he announces "I flip over my Trap Card! Defense Draw!"
When Yusei activates "Fighting Spirit", he announces "My Equip Spell, Fighting Spirit!"
When Yusei activates "Give and Take", he announces "I activate my Trap! Give and Take!"
When Yusei activates "Graceful Revival", he announces "The Continuous Trap, Graceful Revival!"
When Yusei activates "Half Shut", he announces "Here's my Quick-Play Spell! Half Shut!"
When Yusei activates "Junk Barrage" or its effect, he announces "My Equip Spell, Junk Barrage!"
When Yusei activates the effect of "Limiter Overload", he announces "The Trap Card, Limiter Overload!", followed by "When it's sent to the Grave, I Special Summon Speed Warrior!"
When Yusei activates "Miracle's Wake", he announces "I activate the Trap, Miracle's Wake!"
When Yusei activates "Parallel Twister", he announces "I activate my Spell Card, Parallel Twister!"
When Yusei activates "Release Restraint Wave", he announces "I activate my Spell Card! Release Restraint Wave!"
When Yusei activates "Remote Revenge", he announces "This will show that you're not in control of this Duel!", followed by "I flip over my Trap Card, Remote Revenge!"
When Yusei activates "Scrap-Iron Scarecrow", he announces "I flip over my Trap Card! Scrap-Iron Scarecrow!"
When Yusei activates "Shining Silver Force", he announces "My Trap activates! Shining Silver Force!"
When Yusei activates "Shooting Star", he announces "I play my Trap Card! Shooting Star!"
When Yusei activates "Slip Summon", he announces "I activate my Trap! Slip Summon!"
When Yusei activates "Stardust Flash", he announces "I activate my Trap! Stardust Flash!"
When Yusei activates "Stardust Re-Spark", he announces "The Trap Card, Stardust Re-Spark!"
When Yusei activates "Spirit Force", he announces "I activate my Trap, Spirit Force!"
When Yusei activates "Synchro Barrier", he announces "I activate the Trap, Synchro Barrier!"
When Yusei activates "Synchro Deflector", he announces "The Trap Card, Synchro Deflector!"
When Yusei activates "Synchro Gift", he announces "I activate my Spell Card! Synchro Gift!"
When Yusei activates "Synchro Strike", he announces "I activate my Trap! Synchro Strike!"
When Yusei activates "Tuning", he announces "I activate my Spell Card! Tuning!"
When Yusei activates "Wild Tornado" or effect, he announces "The Trap Card, Wild Tornado!"
When Yusei activates "Zero Force", he announces "I activate my Trap, Zero Force!"