Is it okay to have foreign-language characters in trash bytes?

[Aster Selene]

For some reason I occasionally find Korean and Japanese (Chinese?) characters on my Pal Park -> Poke Transferred Pokemon.

For instance I caught a Weedle in LeafGreen and named it Reeda. After Pal Parking it to SoulSilver and using Kazo's PokeTransfer.exe I found its name in Pokegen to be "Reeda\FFFF솜\0227\1805\0207". A Pikachu named Fid, gone through the same process, has as the name "Fid\FFFF穀\0228\C230\0227\1805\0207".

It also doesn't end in \FFFF like the other Poke-Transferred Pokemon which is a bit weird.