Incorrectly credited and credited and credited...

Or it could be just pure vandalism (I personally find this more likely)

As I said in previous thread, when OP posted this problem, I checked a handful of productions his name was added and none of them had his name credited.

Staff shouldn't think they might belong to someone else with same or similar name. Just now I checked this episode too where OP is added with (as Langley McCrea) attribute: https://www.imdb.com/title/tt7852182/fullcredits/

There is no Langley credited in the episode, no Langley McArol, no Langley McCrea. These are the only "Utility Puppeteer" credits in the episode:

Artie Esposito, Sean Johnson, Dorien Davies, Christine Papalexis, Sarah O. Sarang, Warner Adachi, Liz Hara

And they were already listed with their order numbers correctly. The recently added "Utility Puppeteer" credits without order numbers are all wrong. This would also mean OP is not the only one affected by the same vandalism. The vandal probably randomly adds incorrect credits to a lot of people. OP is probably only one of the affected ones.

@mbmb​ I saw your theory about vandalism, and I admit it is increasingly likely at this point. 

The theory I posited was a slightly different one. Rather than mixing up similar sounding names, perhaps the contributor simply got the unique name ID (nm1105676) mixed up with another person.  This is possible, especially if the contributions are being added via bots, scripts, or similar automation or software assists.

@keyword_expert​ Yeah I understood your point, I just said it and checked the episode because the OP is trying to find who "Langley McCrea" is when in reality they just doesn't exist and not credited either.

@mbmb​ Good point. I was forgetting about that part. For someone to just completely make that name up does not seem like an accident.

@keyword_expert​ Yes exactly, your theory that a bot going haywire is possible too but a bot probably won't make up names. At this point only staff could tell I guess.

@lmcarol​ IMDb staff typically do not respond in this forum on the weekends, but rest assured they will see this post and take care of it in a few days. 

@Michelle​ I can see other damages to the database by same vandal are still not touched. For example, like mentioned above, all unordered "Utility Puppeteer" cast entries here are also fake: https://www.imdb.com/title/tt7852182/fullcredits

I can trace a lot more by going from this limited data and abilities. I don't understand why an IMDb employee can't do that when you should be able to see everything. I'm sure you would not lose anything by deleting everything added by same user as it's clear they are doing nothing other than vandalism.

@Michelle​ Thank you very much!

@mbmb​ Where @Michelle said "I have also taken internal steps to help catch and prevent this issue from reoccurring," that probably means she has either emailed the vandal and told them to stop, or put the vandal on probation. 

But you are correct that all past vandalism from this vandal could and should be reversed. Perhaps the problem is that it might not be immediately obvious which of the contributions from this user are vandalism, and which are legitimate. While you, @mbmb, are a very discerning contributor who is able to easily detect some or all of the vandalism, what if the vandalism is only 5% of the vandal's contributions, while the other 95% are legit? In that hypothetical scenario, should 100% of the contributions be undone, or should staff be required to sift through all of it? If that is what is going on behind the scenes, there are some tough choices here.

@Bethanny​ Thank you. It's all been handled, except for one legitimate credit they took away from me and refuse to give it back because the scene was completely cut in reshoots. Upset about that one, but I'm letting it go because I'm tired of arguing about it.

@Bethanny​ I think there's a possibility that some innocent users were caught in the crossfire here.

For example, checking the example page mentioned here a few times: https://www.imdb.com/title/tt7852182/fullcredits

I see all "Utility Puppeteer" credits were removed, but as I mentioned only the ones without an order number were from the vandal (quoting myself: "recently added "Utility Puppeteer" credits without order numbers are all wrong"), the ones that were not recently added and had order numbers were correct (Artie Esposito, Sean Johnson, Dorien Davies, Christine Papalexis, Sarah O. Sarang, Warner Adachi, Liz Hara, Patrick Johnson) and the users added them were most likely innocent users.

@mbmb​ Yes, yes they did, all fixed.

@Bethanny​ Great, there is one missed (Patrick Johnson's credit with the order number 24), that was correct too and the contributor of that was most likely innocent too.

@mbmb​ That one was reinstated too, it probably just took a little longer.

Cheers!