Chose Esperanto. Or Netherlandish (I refuse to call it Dutch because Dutch means Deutsch and Deutsch means German)
Netherlandish is kinda a mix between English and German so there you have at least 2 out of the 5 languages.
But since neither Esperanto nor Netherlandish is available I dunno....... T.T sry
Schwytzerdütsch maybe? Pikachü Chrabby Chingler Chochowei Charpador Charnimani would be nice names.