* Milo's League Number is "831", which can be read in Japanese as goroawase for 野菜 yasai, meaning "vegetables".
* Nessa's League Number is "049", which can be read in Japanese as goroawase for 泳ぐ oyogu, meaning "to swim".
* Kabu's League Number is "187", ???
* Bea's League Number is "193", which can be read in Japanese as goroawase for 戦 ikusa, meaning "fight".
* Allister's League Number is "291", which can be read in Japanese as goroawase for 憎い nikui, meaning "hateful".
* Opal's League Number is "910", ???
* Gordie's League Number is "188", ???
* Melony's League Number is "361", ???
* Piers's League Number is "061", ???
* Raihan's League Number is "241", ???

So what is the meaning behind the missing numbers?