Union Cave (Johto)
    PokémonTypeRarityLevel
    CorsolaCorsolaSuper RodUncommon40–40
    CorsolaCorsolaGood RodRare20–20
    GeodudeGeodudeCaveCommon9–25
    GolbatGolbatCaveHorde19–22
    GolbatGolbatCaveUncommon22–25
    GoldeenGoldeenSuper RodVery Common40–40
    GoldeenGoldeenGood RodVery Common20–20
    GoldeenGoldeenOld RodUncommon10–10
    GyaradosGyaradosSuper RodRare40–40
    KinglerKinglerSuper RodRare40–40
    KrabbyKrabbyOld RodRare10–10
    KrabbyKrabbySuper RodVery Common40–40
    KrabbyKrabbyGood RodCommon20–20
    LaprasLaprasWaterLure28–28
    MagikarpMagikarpSuper RodUncommon40–40
    MagikarpMagikarpGood RodVery Common20–20
    MagikarpMagikarpOld RodVery Common10–10
    OnixOnixCaveUncommon8–25
    QuagsireQuagsireCaveRare22–25
    QuagsireQuagsireWaterVery Common20–25
    QuagsireQuagsireWaterHorde20–22
    RaticateRaticateCaveUncommon22–25
    RattataRattataCaveCommon9–25
    SandshrewSandshrewCaveCommon9–11
    SandshrewSandshrewCaveHorde6–8
    SeakingSeakingSuper RodUncommon40–40
    StaryuStaryuSuper RodUncommon40–40
    StaryuStaryuGood RodRare20–20
    TentacoolTentacoolWaterVery Common20–25
    TyrogueTyrogueCaveLure13–28
    WooperWooperCaveUncommon9–11
    WooperWooperWaterVery Common20–25
    ZubatZubatCaveCommon9–25
    ZubatZubatCaveHorde6–8