Dervy lives on the FFXIV DPS forums. He does nothing but sits there and posts all day. 80% of posts there are from him and only him. He is the DPS forums.
Even though he allegedly has a British Accent and plays on the Moogle server, he has no known set timezone – he’s posting 24/7. Some say he’s an AI, others believe he doesn’t understand the concept of sleep. There’s also rumours circulating that he is a Dragoon in real life.
He’s somehow discovered how to create blogs after realising he doesn’t have a strong following on social media. This could be due to the fact he’s not human and doesn’t understand how to attract an audience.
People who’ve managed to catch him in-game have only ever seen him in the Mists, Ward 2, Plot 5 Training Dummy. According to a few sources, 90% of the End-Game to him is Dummy Parses.
Whatever the truth is, he’s decided to re-do a lot of core maths and concepts.