I came across this question on Stack Overflow and saw the poster's name. It's mirrored on both x and y axis. The real name should be Chandan but actually it's this way
How is this possible?
Most (but not all) Unicode characters are allowed in user names and Unicode contains upside down and back to front versions of the Latin alphabet.
There are online converters that will take any string you type in and give you the upside down version.