People who make
typefaces for a living. It's harder than it looks. It starts out fun with the
vowels, and the
ascenders and
descenders, but by the time you've done the outlines for the
hash and the
semicolon... and that's before you even
start on the
kerning. It takes
forever!
A couple of famous typographers are Eric Gill and Claude Garamond. And that Frutiger guy. Of course, any damn fool can make a font these days, but that doesn't mean they should.