Code point
U+3355
Glyph appearance depends on your fonts.
U+3355
So<square> 30EC 30E0U+3355 SQUARE REMU is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+3355
13141
㍕
㍕
E3 8D 95
3355
00003355
%E3%8D%95
\u3355
\u3355
\u3355
\3355