The Payload Prankster (The API Poltergeist)

Nemesis
Sir Fetch-a-Lot (The RESTful Retriever)
Superpower
Silently altering JSON keys at 2:00 AM and severing connections precisely at the 99th percentile of a 10-hour metadata download.
Backstory
A mischievous female poltergeist haunting the servers of obscure biological databases. She delights in ruining your data extraction with a smile that is far too cute for the damage she causes. She knows your pipeline depends on a field called geneId, so she casually renames it to gene_id while you sleep, leaving only a few glowing curly braces and a smug little giggle behind. When you write a custom request loop to fetch the data again, she waits until you step away for coffee to hit your script with a 429 Too Many Requests timeout. She does not break APIs exactly; she just changes the rules when nobody is looking.
Catchphrase
"Oh, you needed that data? The schema changed yesterday and your connection just dropped. Try again!"