on t.v there were only 2 seasons but then they started yugioh 5ds but they continued to show and finish the series in japan but in total all episodes there were 180
Kagemaru appears in Both GX episodes 48 & 49. He also appears in a later episode to explain to Jaden other Dangers that are coming with Sartorius, but I do not know the Episode number
Actually the gx series end because 4kids needed to start dubbing 5ds. but the creator said once the series end that they will finish dubbing gx. Actually ... they wont dub season 4