Sorry this page is completely unstyled right now I just wanted to get the information down finally... But also completely unstyled pure HTML page has a lot of Trunnion vibes so I'm not too sorry.
Legate Trunnion is a member of the Cogwork Orthodox Church; she is framed as being very loyal to the Orthodoxy, and likely underwent a process called "Standardization", which essentially turns someone into a steampunk robot. She is often portrayed as having a stand-offish personality (specifically with the rival Maxwellist, Hedwig) and slightly terroizing everyone around her. She is also my favorite character across the entire SCP verse.
I have a dozen and one headcanons for her that I've made up completely out of thin air for her. No these have no evidence in any article on-site but half the fun of SCP is making up your own personal canon(s) anyway.