The modern name for an organized crime ring that's been around since the Era of Ahsonov. Founded by "Eyeguy", the group has always sought for one thing: to sow dissent and chaos violent enough that Stem Tower comes down. The morals of their crimes don't matter, as long as they're happening.
When the time comes for a power vacuum to be grasped, "Eyeguy" plans to use the syndicate's reputation and influence to grasp hold of Stem City and form it back into the democracy it was always meant to be.
Stem Tower of the past shut down the syndicate a dozen times, but they've never managed to kill the heart of the operation. Even in his incredibly old age, "Eyeguy" has enough loyal followers that he can start back up again months later.
The crime syndicate had been a major supporter of the Shroom Shade in its prime, supplying them firearms and bombs for their terrorism.
In the modern day, Under the Tower holds power in numerous dark markets: drug dealing, Stem Slime prostituion, Stemrail raiding, and business protection. They used to partake in Stem Ram sex trafficking and assassinations up until XX814. Teis Ztardum stepped in and shut down these more immoral businesses. That, along with Blema's chaotic legislation, has allowed Under the Tower's syndicate to bloom into not just a criminal empire but pseudo-peacekeepers for the lower class of Stem City.