Octant
An octant is a character which is 2x4 in dimensions and allows for high resolution artwork. When combined with background cell colors, these can result in images that may look out of place on Our World of Text due to their high resolution.
Octant characters originate from an upcoming Unicode block called Symbols for Legacy Computing Supplement. In theory, these characters should allow for up to 256 total combinations. However, not all combinations are present in this block since a small portion are duplicates of already existing characters including but not limited to whitespace, bottom half block, top half block, left half block, right half block, and full block.