Sadly, there isn't a Kuroshitsuji (Black Butler) Episode on the Noah's Arc Circus.
The circus appears in the manga and manga only (For now I hope!)
Episode 16 (the end of the Curry Arc) is where the first season of the show deviates from the manga. The following episodes of season one do not take place in the manga. You can find the story continuing from the manga in Kuroshitsuji: Book of Circus, the third season.
Season one is done and out.
Sebastian Michaelis or in the Japanese version Sebasuchan Mikaerisu.Sebastian often describes himself through his catchphrase "I am simply one hell of a butler".
He did appear on one episode of Yo Gabba Gabba. He played a circus leader.
As of now there are unfortunately no plans for it. But I am remaining hopeful that one day there will be.
circus's
Kuroshitsuji/Black Butler the Manga made its first debut in Japan in October 2006. It is still being released, and it is ongoing. Kuroshitsuji/Black Butler the Anime first premiered in Japan in October 2008. Since then Season 1 has been fully released, along with Season 2, 7 OVAs, and 2 Stage Musicals. There is at present no word of whether or not there will be a 3rd Season of the Anime, but fans are ever hopeful. So I would like to believe that the Anime is ongoing as well.
The first one. She's in pretty much every episode.
I can't say .. it but know one but only the creators may know
Bassist Geezer Butler had titled one of his songs 'Black Sabbath' after the title of a 1963 vampire film starring Boris Karloff.
There are two: season one, episode 13 "Sectionals" Season 3 episode 14 "On My Way"
Well, according to the episode list on wikipedia, seasons one and two are a total of 78 episodes. Then, you have the 5 OVAs. Then season three is a total of 39 episodes. That brings the total to 122. I haven't seen the whole series, so it's possible one of the OVAs had a fake trailer at the end for the "next episode", kind of like the first season OVA of Black Butler and a bonus episode of Wedding Peach.