What are the Pen names use by the propagandist?

so that, if their articles or publications do not interest the Spaniards , it will hide their true identity and save themselves for any killing attempts.

ボールペン (boorupen) is derived from, and means "Ballpoint Pen". The short form is ペン (pen) and means "pen".

When he took over his brother's printing business after the British arrested him for sedition Ben took his first pen name because he didn't want anyone to know "who" he was so he could keep writing....

the pen name of andres bonifacio is "AGAPITO BAGUMBAYAN" and "MAY PAG-ASA".

because he wanted to become a doctor.