Allan Zahyn or and mostly spelled as Allan Zhayn(pronounced as Zain or Zha-een) is the European and American alter ego of Zahasuki Harikuni. The name is actually Zahasuki's pseudonym as a writer.
The Allan Zhayn name is literally Zahasuki's alter ego in his both European and American persona. Allan Zhayn's portrait by Zahasuki Harikuni also has some hint of typical European and American comic style of drawing.
Zahasuki uses the name as he strolls about the Western regions in searching for juicy and great inspirations as most of his characters are westerners.