system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter/DC] Would the Marauder's Map reveal Joker's identity in Hogwarts?

Simple question, really. In light of recent debates in this subreddit about Death Note vs Joker, I thought Harry Potter might be able to chip in and help if he had his Map readily available.  If i recall correctly, the Marauder's Map only works within the boundaries of Hogwarts, thus would  it reveal the Joker's true identity? Yes/No question, but I wanted to see if there's any canon counter-evidence if any.  Also, I think someone somewhere said Batman actually knows Joker's real identity. Not sure if true or not, but irrelevant with this question.
gpt
Magic isn't quite bound by the same rules as human logic. The map could discern a person's identity very easily unless confused by some sort of magic meant to conceal the user; simply calling yourself by another name would mean nothing to the map, as an alias is a thoroughly non-magical form of concealing one's identity.

Case in point: Peter Pettigrew. He was living as a rat at the time, under the name of "Scabbers". Definitely an assumed identity, yet the map labeled him by his true name with no trouble.


Now, your question begs a more interesting hypothetical, namely "How would the map react to a person who had never been named?" For example, a newborn baby whose parents had not yet had the chance to name him or her.