He signed it with the name of “Ismail Ax.”
See my post #270, above, for what I found on that so far. My research for "Ax crew" has found several uses. It appears to be part of D&D type muds but also part of the Anime scene. It almost appears to some sort of vernacular. The reason Ax Crew is relevant is because I was able to find an example where an "Ax Crew" create names for themselves ending in "Ax", including an "Ismail Ax". I believe "Ismail" is from Unix.
So, Ismail Ax could mean he was into D&D, was into Anime [the one reference I found was for a Vampire anime, or some other Ax Crew of unknown description.
Marxist Islamist, possibly.