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Dr. Mejina (also known as Professor Mejina) - Japanese (メジーナ博士) is the Professor of the Mermaid Kingdom and a minor character in Doraemon's 2010 film Nobita's Great Battle of the Mermaid King.

Appearance in the movie[]

Suneo is showing off again, this time about how he’s been going scuba diving and swimming with ocean life. Of course, Nobita is jealous as usual and asks Doraemon for help. Doraemon pulls out an ocean simulator that lets anyone wearing the goggles to actually simulate diving. They leave the machine pumping water for the night and then go around town scattering some fish food, ready to invite some real ocean life to take pictures with and brag about.

After a fun night out, the next morning they find a girl who turns out to be Princess Sofia of the Aquarians. She got lost through one of the portals Doraemon had set up but was amazed at the surface world. After a tour and meeting Nobita’s friends, she explains that her people migrated from Planet Aqua to Earth 5000 years ago – about the time when stories about mermaids first emerged on Earth. Now they live quietly in the deep seas. When she decides to return to the palace, Nobita and his friends join her with some help of Doraemon’s gadgets. On their way back, they are attacked and are mistaken as kidnappers. Shizuka manages to hide but she is abducted by the Aquarian’s enemy, the Kaiges who managed to track them down, determined to get their hands on the legendary sword. After Sofia clears up the misunderstanding, they have an audience with the queen Ordeen who tells them how their fight with the Kaige had made their Planet Aqua uninhabitable. A message arrives from the Kaige demanding they hand over the sword in exchange for Shizuka who was being held hostage. Unable to decipher the clue they had found, they didn’t know the whereabouts of the real sword so they decide to create a decoy. There was little time left before the effects of the underwater gun were going to expire. They rescue her just in time and a fight breaks out. As Sofia prays for help, the sword reveals itself and the Kaige’s leader Buikin obtains the power, making quick work of Sofia’s army.

After luring him out of the water, Sofia and the others manage to trap Buikin using Doraemon’s simulator. In the process, they find out the sword helps clear up polluted water and Sofia is happy they can return home to use it on their home planet. The heroes are welcomed back with cheers in the kingdom but they Nobita and his friends realise they’ve away for too long.

With that, they say farewell and take the time machine back to before they met Sofia, ready to return to their everyday lives and wondering if they will ever meet again.

Trivia[]

  • His full name was Hakase Mejina.

Navigation[]

The Merpeople

SophiaHariboQueen UndineDr. Mejina
Sophia's MotherSophia's FatherSophia's GrandfatherManatia
The Demon Fish Tribe
BulkinTragisThe Demon Fish
Settings
Deep OceanKingdom of the MerpeopleBulkin's lairAqua Star
Major Events
Invasion of the Demon Fish

DoraemonNobita NobiShizuka MinamotoTakeshi GoudaSuneo Honekawa
Supporting & Minor Characters
Nobi Family DoramiNobiru NobiNobirou NobiNobisukeNobisuke NobiNobita's grandmotherNobita's grandsonNobita's great-grandsonSewashi NobiSewashi's cousinSewashi's motherTamako NobiYukari
Minamoto Family KazuShizuShizuka's motherYoshio Minamoto
Gouda Family Gian's auntGian's fatherGian's motherGian's uncleJaiko GoudaMuku
Honekawa Family ChiruchiruSuneki HonekawaSunekichi HonekawaSuneo's fatherSuneo's grandmotherSuneo's motherSuneo's uncleSunetsugu HonekawaSuneo's wife
Dekisugi Family Akira DekisugiMr. DekisugiDekisugi's wifeHidetoshi DekisugiHideyo Dekisugi
Nobita's Classmates and Friends BotakoEtsukoGaribenHaruoGanko SuwaIchiro AbarayaInako KawaiJiro AbarayaKaoriKenKimiKuraiKawamuraKyoboMasashiMizueMoteo MoteMusukoMasamiNobioNakamuraNon-chanOtonashiSaburo KatakuraSuzumuShigeto SuzukiSuzySaotome SeikoTadashiTamaTamatsuTameTzoTachibanaUranariYasuoYamadaYoshiko
Celebrities AcchanKanna HatomotoLunaNozomi OharaMao AsadaMari MaruiPermanShun AmaguriSumire HoshinoTsubasa Ito
22nd Century Characters BelleBengal RichnessCandyChan, Rin & PonConnieDenjaDepon AlexDice ChoboichiDora EaterDora Leonardo Da VinciDora Med IIIDora the KidDora-nichovDora-rinhoDoramiDorapinEl MatadoraJaidoraJesterKarenLulliMosaroNoramyakoNobita's great-grandsonPawaemonPrincipal TeraodaiPuteraRobokoSabuSewashi NobiSewashi's motherSommelier RobotWang DoraWonderful
Pre-historic Characters Captain JohnnyJohann MarshallKennethMichaelaMigMokkeMusashibō BenkeiMiyamoto MusashiShamate
Important Characters BelleCandyCinderellaConnieDepon AlexHitsujiJohann MarshallKennethLapis SpinelLunaMermaid PrincessMiaMigMiyamoto MusashiMomoNewtonNanaNinaNoraPitoPrincess AreSabuWonderful
Animal Characters ChiruchiruChukenperChuntaHitsujiKontaLunaMiaMii-chanMomoMukuNoraPeekoPeroTeraTsuchinokoWonderful
Key Characters AronBanhouCarlaChippoDakkeDirector BurgerElFreyaFuukoGusukeHariboKoronKuntakkuKurajoKurt HartmanLianLinleiLucaMarimbaPapiParuparuPiisukePokoPoponPrincess SunekoQuizRokorokoSonyaTapTemujinUnderwater BuggyPriest Xuanzang
Supporting Characters AruBettyBrusBubuBulltaroChapekChikoChippoClemDakuDirector FiksElder JieGenbuGingerGorogoroGurioHannaHokuroProfessor HouProfessor HyakkoiIcarusIshmalKamoranKellyCaptain KidKongfighterKukuKururinpaLizaLogLunaMariaMaria (2018 movie)MozoDr. MejinaMikujinMilkMofusukeInspector MustardNakameguroNoajinNobitNobihide NobiOnabePeavePegaPiinaPoporuPupiRoRomiShizukariaSpianaSunTajikaraTaraneThe SowerQueen UndineYukatan
Deuteragonists CarlaChammyFlockIchiJackKiboKukuruLucaLuffinMiyoko MangetsuMorinaPippoRiruruRoppuruPrincess LireSharmeeSapioSarahSophiaTheo
Antagonists AbdilAdjutantAnimal HuntersBalderryBarunaBernardBlack MaskBlizargaBorgantBulkinBull KingCaptain SilverColonel BabylonCommander LiebertDaburandaDiaboloDemaonDesterDr. CloneDoctor RayDolmansteinDracorlDrakonruleDoubtGagaGodartGeneral GilmoreGoradoGuillerminHydeIkarosJillKaitou DXKurayami Tribe (Gigazombie and Tsuchidama) • LedinaLeviathanLockMafugaMebaMechatopian Army LeaderMedusaMoaMr. CashNatalieNekojaraNimugeNyagoProfessor NapogistraProfessor KosGeneral NejirinNekojaraOctogonOdoromeOgonOnigoro KumatoraPhoenixiaPoseidonProfessor PepplerQasimQueen JeanneQueen Iron FanSaberSeagridShermanShirahSkySnakeStormTorihoTragisThree SagesUnoUrandaViviWhale DemonYadori (Yadori Emperor) • YamitemZubu
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