Also the J series ended up being dubbed by Ocean in Vancouver instead of Animaze in LA, so the entire cast was changed. Notably Otaru went from being voiced by a female (Mona Marshall) to a male (Brad Swaile). Then J to X went to Blue Water in Calgary, presumably due to union issues, and the entire cast was changed once again.
Casting Gag: The entire Japanese voice cast returned in J, despite R having none of the same characters (they are similarly named Expies), where as most dubs had little to none of the voice casts return.
The U.S. release got J's Lime and Cherry, Maggie Blue O'Hara and Erin Fitzgerald respectively, to play R's Lime and Cherry, even though one moved south a while back.
Marth Debuted in Smash Bros.: Many people assume R to be a sequel due to this, as it was not released in America until 2004. The same year J to X was localized.
No Dub for You: The J VHS (not kidding) release in 1999 was sub only, even though J again, released around the same time, had a dub. Averted with the DVD release.
What Could Have Been: Apple was going to be part of the original series, but she was cut. She appears in the Battle Sabers game, anyways.