Six episodes of pure chaos dressed up as bonus content. The "Making of Black Butler II" operates like a Hollywood behind-the-scenes mockumentary, which means you get to watch the cast roast each other while pretending to film an anime that doesn't exist. Everything else is exactly what it promises: Ciel in Wonderland territory, a ball simulation that lets you pretend you're part of the mansion, character spotlights that wouldn't survive in the main series but thrive here. You're watching people who know the show well enough to break it without permission. The weakness is real, some OVAs feel stretched thin and the Wonderland episodes wear thin on repeat. This exists for fans who've already committed to the franchise and want to hear these characters riff on themselves.

Six standalone episodes, released with the DVDs, set the main story aside for side material. A two-part tale recasts the characters of the second season as figures from Lewis Carroll's Alice in Wonderland. Another episode plays like a simulation game: Elizabeth asks a lady, possibly the viewer, to a ball at the Phantomhive mansion. A Hollywood-style documentary offers behind-the-scenes interviews with Sebastian, Ciel, Claude, Alois and others. William and Grell take charge of training new shinigami and recall their own days as training partners. The last episode looks at daily life in the Trancy household and at how the staff serving Alois look after him. The set works best for viewers already invested in the characters.