I didn't know that
I am Bonzai Joe because once upon a time when I was 10 years old, I wrote a story in which there was a character called Bonzai Joe (just called so because I thought it sounded cool) and then some months later, I started calling my self Bonzai Joe on the scoreboard when I raced with ManOnMoon. Now I am just Bonzai Joe because I am so used to it that I won't take another name. I don't think it's a particularly great name... the greatest name here is of course Zak McKracken.
By the way, we also know the origin of Roy's name (his real name) and of Alain's name (same thing). Mingva is probably a strange anagram/abbreviation of Mindaugas Gvozdas, and Krys Toff is a different way of spelling "Christophe". But the others I don't know... Parano must have something to do with Paranoya, and Duke Bismarck was a german (Preussian)... duke... in late 1800's/early 1900's. He slaughtered the danes in 1864.

By the way, we also know the origin of Roy's name (his real name) and of Alain's name (same thing). Mingva is probably a strange anagram/abbreviation of Mindaugas Gvozdas, and Krys Toff is a different way of spelling "Christophe". But the others I don't know... Parano must have something to do with Paranoya, and Duke Bismarck was a german (Preussian)... duke... in late 1800's/early 1900's. He slaughtered the danes in 1864.