Anthony Irin is the current head of the Mishion guild. He is first introduced in the story Dark Band Risen, which tells of his rise to this title. He was originally Science Lab Director and Guild Agent, but gave up his science lab job when he took command. Anthony is the main character of all the Mishion stories as he attempts to lead the guild through dangerous times. He attempts to do this with the aid of his loyal and brilliant friends, such as Alia, Tiberius, and Thearen.
Anthony Irin works hard to preserve the guild and protect Cypostello. His greatest desire is to see peace return to the once city of light, and he will do whatever it takes to accomplish this. He is known for his detective-like analysis of situations and his formidable guild training. This likely makes him the greatest warrior in the guild aside from Tiberius, of course (the two of them never had a proper sparing match).
Overall, Anthony Irin is likely the most important figure of the Mishion storyline, working to preserve the guild and humanity.