Code point
U+2BBC
Glyph appearance depends on your fonts.
U+2BBC
SoU+2BBC OVERLAPPING BLACK SQUARES is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Miscellaneous Symbols and Arrows block.
Choose the representation you need, then copy its value.
U+2BBC
11196
⮼
⮼
E2 AE BC
2BBC
00002BBC
%E2%AE%BC
\u2BBC
\u2BBC
\u2BBC
\2BBC