Visitors is taken from 'V' - The Video Game, based on the 'V' TV series of the early 1980s.  Yeah, the one with the lizard people infiltrating humanity, that's it.  I put in some angle parts because I didn't want the M and W to look like deformed Hs.  Might just add extra "columns" in the glyphs to keep it pixellised.  This is the whole character set, plus a few extra characters to build your own pulse line.  Have fun