No, I don't think so, since USA "NEVER" had any of the older series of medabots such as Medarot, Medaot 2, Medarot 3, Medaot 4, Medarot 5, Medarot Navi. All these are like the Pokemon series, not like the USA ver. were you control one main medabot and fight.
Well, besides Shingata Medarot I think the 2 remake was the last RPG they made... It was more an issue of the GBC being on its way out by the time the series became popular enough in english. :/ I guess they could have released Navi, but they probably chose not to because it has very little that's recognizable from the show... Meanwhile, Medarot DS has a bunch of familar characters and Medarots right from the start. *shrug*