The Medefaidrin block spans U+16E40–U+16E9F, 96 codepoints in Plane 1 (Supplementary Multilingual Plane). 91 are assigned in Unicode 16.0; the other 5 are reserved for future characters.
All of its characters belong to the Medefaidrin script.
By general category: 32 uppercase letters (Lu), 32 lowercase letters (Ll), 23 other numbers (No), 4 other punctuation (Po).
The first 91 arrived in Unicode 11.0 (2018).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.