▁Series ▁director ▁Y osh io ▁Sak am oto ▁stated ▁that ▁the ▁Space ▁Pir ates ▁that ▁inv aded ▁Z eb es ▁took ▁" Z eb esian " ▁as ▁a ▁general ▁name ▁for ▁themselves ▁after ▁the ▁con quest ▁of ▁the ▁planet , ▁comparing ▁it ▁to ▁people ▁who ▁referred ▁themselves ▁as ▁" Amer icans " ▁when ▁they ▁em igr ated ▁to ▁the ▁United ▁States . ▁ ▁Night m are ▁The ▁ ▁is ▁a ▁gravity - cont rolling , ▁mon ster ▁cy borg ▁originally ▁created ▁by ▁the ▁Gal actic ▁Federation ' s ▁secret ▁bio - we ap ons ▁project . ▁In ▁F usion , ▁an ▁X ▁par as ite ▁inf ect s ▁Night m are ▁contained ▁in ▁S ector ▁ 5 - AR C . ▁It ▁esc apes ▁and ▁dest ro ys ▁AR C ' s ▁data ▁room . ▁Sam us ▁confront s ▁Night m are - X , ▁defe ating ▁and ▁absor bing ▁its ▁Core - X , ▁obtain ing ▁the ▁Gra vity ▁Su it ▁upgrade . ▁In ▁Other ▁M , ▁Sam us ▁encountered ▁the ▁Night m are ▁while ▁on ▁her ▁journey ▁to ▁S ector ▁Zero ▁on ▁the ▁B ott le ▁Sh ip . ▁The ▁creature ▁f ights ▁Sam us ▁twice ; ▁once ▁when ▁she ▁tries ▁to ▁enter ▁S ector ▁Zero , ▁and ▁again ▁when ▁she ▁tries ▁to ▁exit ▁the ▁same ▁sector . ▁ ▁MB ▁ ▁MB , ▁nick named ▁ ▁by ▁her ▁adopt ive ▁mother ▁Dr ▁Mad eline ▁Berg man , ▁was ▁created ▁by ▁the ▁scient ists ▁of ▁the ▁B ott le ▁Sh ip ▁as