These are my guesses to what the new names of future game/anime characters will be once they debut in the US.

Game

Character	First appearance	US name prediction	Why	Actual US name
Yukari	Pokémon Farm	Mimi	Derived from "Mii" of course. Also is like "Bebe".	Hayley
Hajime	Pokémon Ranger Batonnage	Ordell	Ordell means "beginning". Just like Hajime.	N/A

Anime

Character	First appearance	US name prediction	Why	Actual US name
Ishisu	DP057	Izzy	Similar to orginal name	Isis
Atsuo	DP058	Austin	Similar to original name	Alan
Marble	DP059	Marble	The name is not Japanese so I think they'll leave it alone	Marble
Aki	DP062	Autumn	Autumn is the English translation of Aki	Autumn
Natsu	DP062	Summer	Summer is the English translation of Natsu	Summer
Haru	DP062	Spring	Spring is the English translation of Haru	Spring
Yumomi	DP063	Yolanda or Moreen	Both names are similar to original	Leona
Reiji	DP066	Reggie or Raul	Reggie is practically the same as Reiji. Raul is another option because it will match his brother Paul.	N/A
Shizue	DP070	N/A	Unsure for now. I'm thinking Suzie is similar but they've used that for two other important characters.	N/A
Hajime	DP071	Ordell	Ordell means "beginning". Just like Hajime.	N/A

Well that's it until more characters are released.