Onion Knight ( Final Fantasy III ) The Onion Knight is a job class in " Final Fantasy III " . In the original Famicom version , it is the default job class , while in the 3D remake , it is a secret job class . It normally has very low statistics , but once a character reaches level 92 , the Onion Knight gains 12 on each stat per level . It is recommended to use the Onion Knight class after reaching level 92 , or after the Onion Knight ' s vitality surpasses that of the character ' s current job , since HP growth is proportional to the character ' s vitality upon level up . The four Onion Knights of the Famicom version are not named in - game . The official manga serialization , " Legend of the Eternal Wind : Final Fantasy III " , names them Muuchi ( ムウチ ) , Doug ( ダグ ) , J . Bowie ( J ・ ボウイ ) , and Melfi ( メルフィ , the only female in the group ) . In the " Dissidia Final Fantasy " Ultimania guide , and on the series ' 25th anniversary website , they were given the same names as the protagonists in the 3D remake : Luneth , Arc , Refia , and Ingus . Obtaining . In the Nintendo DS remake , the player must send a Mognet letter to seven other people playing " Final Fantasy III " . Afterwards , the player must send four more letters to Topapa , and the fourth letter will say that some children are in danger . The player must head to Ur and talk to Topapa , then head to Altar Cave and rescue the children from the Bombs . Afterwards , they will be given the Onion Knight job . In the following releases of the remake , as there is no way to communicate with other players , the quest is unlocked once the player has completed 25 % of their bestiary ( usually after beating Gutsco ) . A message from Topapa through Mognet will say that the children went missing . Arc or Luneth must be in the first character slot for the message to appear . After talking to Topapa directly , he will tell that the children could be at Altar Cave . After saving the children from three Bombs , one of them will give a crystal fragment to Arc , unlocking the Onion Knight job . The Onion Knight has no special command since it is the default job class and the weakest during the beginning . However , once the character reaches level 90 , their stats expand rapidly , reaching 99 in every stat , making it the most powerful class . It ' s also the only class that can use the Onion equipment , the strongest equipment . Equipment . In the original Famicom release , the Onion Knight can only equip three sets of equipment ; the most basic equipment , some late - game equipment , and the ultimate Onion equipment . In the remake , the Onion Knight can equip anything , except for the job corresponding ultimate weapons . It is again the only job able to equip the Onion equipment . Other appearances . " Dissidia Final Fantasy " . Onion Knight appears as a Warrior of Cosmos and stands as the hero representing " Final Fantasy III " , opposing the Cloud of Darkness . Forming a duo with Terra Branford of " Final Fantasy VI " , and later a trio with Cloud Strife of " Final Fantasy VII " , the Onion Knight tries to offer the meek heroine his support through bravado and continual assurance of their victory . In truth he is easily frightened and uses his head to escape from conflicts . The Onion Knight ' s encounters with the various villains serve to test his courage and strength in the face of danger . His alternate form is meant to resemble Luneth as an Onion Knight from " Final Fantasy III " . " Dissidia 012 Final Fantasy " . Onion Knight reappears as a Warrior of Cosmos in the prequel to " Dissidia Final Fantasy " alongside all the other characters from the original . He plays a smaller role in the 12th cycle , only appearing in the Reports and as an Assist in a gateway in Vaan ' s storyline . Vaan appoints himself the Onion Knight ' s " big brother " , believing that as the youngest Warrior of Cosmos he needs someone to look out for him . Though he is annoyed with Vaan treating him as a child while the others see him as an equal , the Onion Knight comes to think that having Vaan as a friend isn ' t so bad . His third outfit removes his helmet , recolors his hair white and gives him black armor with red and gold details , based on Yoshitaka Amano ' s artwork of an present in much of " Final Fantasy III ' s " art . As a bonus fourth downloadable outfit , the Onion Knight wears the vestments of Ingus while he is an Onion Knight . " Dissidia Final Fantasy ( 2015 ) " . Onion Knight is set to return in the arcade reboot , and is classed as a Unique - type character . He can now enter the Ninja and Sage jobs through EX Skill , depending on the distance between him and his opponent ; close range will job change to Ninja , long range will job change to Sage . " Theatrhythm Final Fantasy " . Onion Knight is a default playable character , based on his " Dissidia " appearance . His stats and abilities are Speed and Spell oriented . His Limit , Ninjutsu , deals damage in proportion to Strength and Agility . " Theatrhythm Final Fantasy Curtain Call " . Onion Knight returns as a default playable character . If the player did not select him among their party of four , he can later be unlocked by collecting Yellow Shards . He is once again Speed and Spell oriented , and his Limit , Ninjutsu , functions the same as before , dealing damage in proportion to Strength and Agility . " Theatrhythm Final Fantasy All - Star Carnival " . Onion Knight returns as a default playable character . His Limit , Ninjutsu , functions identically before , dealing damage to boss type enemies in proportion to Agility only . Type : Agility < br > Summon : Ifrit " Final Fantasy Airborne Brigade " . The Onion Knight is an ally and a summonable Legend depicted in his " Dissidia " outfit . His ability is Swordshower . " Final Fantasy Record Keeper " . Onion Knight appears a character . He is able to equip the weapons Dagger , Sword , Katana , Axe , Hammer , Spear , Fists , Rod , Staff , Bow , Harp , Whip , Throwing , Book , Gun ; also he able to equip Shield , Hat , Helmet , Light Armor , Heavy Armor , Bracelet , accessories . He has average initial stats but they get outclassed by everyone else and at lvl 50 he is the worst but from level 93 up to 99 his stats skyrocket like in the remake . His skill pool is Black , White , Combat , Support , Celerity , Ninja all at 3 stars , they are expendable up to 5 with Record Spheres and motes . " Triple Triad ( Portal App ) " . Onion Knight appears on a Triple Triad card . Non - " Final Fantasy " Appearances . A costume of the Onion Knight in his " Dissidia Final Fantasy " attire appears in " Kingdom Hearts Mobile " .