For Recycled Characters:
Claire's Butler, Royce from AG057 reappeared as Luna's Butler in AG166.
And now, something that astonished me like hell.
Delaney/Yasuji from EP247 got recycled and appeared as Kent in AG103. And not only that, Yasuji's rival Mason (I think he didn't have a name in original version) was also recycled in AG103 as Ruriri Trainer.
Two characters from the same episode recycled in one episode. Fushigi da, ne?
EDIT: 1,111st post! Funny number.