User blog comment:SnowyBoy/Inazuma Eleven 2 : Blizzard/@comment-4703969-20120415181257

Yeah, you need to get Nakata for Neo Galaxy. There is no way to get a manual for it, so you can't teach it to another player. If you need help on how to get him, or pretty much any other thing to do with the games, you can ask at my talk page :)

I'm pretty sure God Hand Triple is obtainable through a Wi-Fi event in the second game, you can directly buy it in the 3rd game, though.