The Marchen block spans U+11C70–U+11CBF, 80 codepoints in Plane 1 (Supplementary Multilingual Plane). 68 are assigned in Unicode 16.0; the other 12 are reserved for future characters.
All of its characters belong to the Marchen script.
By general category: 33 non-spacing marks (Mn), 30 other letters (Lo), 3 spacing marks (Mc), 2 other punctuation (Po).
The first 68 arrived in Unicode 9.0 (2016).
Most characters here are combining marks. See combining diacritical marks.
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.