Sensuki
Arcane
I can't post to the Obsidian forums, they locked me out of my account after my departure.
When I realized this, I asked them to at least delete my account since I can't access it, and they said that was impossible to do (or Darren Monahan did, anyway).
The accounts on the Obsidian forums are likely stored in an SQL database of some sort. The forum software may not have a delete account function. That doesn't mean that your account can't be deleted but it means that some time has to be spent on deleting it properly without causing problems.
Logging into the SQL database, opening the accounts table typing DELETE FROM users WHERE users.DisplayName = 'Chris Avellone'; may not work because of dependencies on that row from other tables. He could find and delete all of those, but there would likely be several bugs caused in the forum depending on how the website code handles the SQL info.