The Inquisitor at the end is indeed Marsh. He stayed alive using the same trick that TLR used.
I said that I actually had a related question.
He said “Oh, do you want to ask why Marsh has a Feruchemical Atium spike?”
I blinked, and said that my question was actually “Why did Bloody Tan see Ten-Soon (as the Survivor) and Marsh (as Ironeyes)?”
He said that he was not answering any questions on what Bloody Tan saw, or thought he saw.
I then said, “But now that you mention it, why does Marsh have a Feruchemical Atium spike?”
He told me “You’ll have to figure that out! Good job on getting two RAFOs in a row!”
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.