Don't know if I've posted in this thread, so meh:
Sajaki is an Alias I have used for years online. It comes from the Character Triumvir Yuuji Sajaki from Alastair Reynolds "Revelation Space" Novel. If anyone of you have read that book, then you will know that he is a stoic, quiet, yet immensely intelligent character.
Hakamichi, well that's from KS...