What is it called when a word scrambled to become pseudonym?

There's no specific term for scrambling a word to create a pseudonym. It's more of a creative technique, and you could describe it using phrases like:

* Anagrammatic pseudonym: Emphasizing that the pseudonym is an anagram of the real name.

* Scrambled name: A simple, straightforward description.

* Code name: If the scrambling is part of a larger system of secrecy or identity management.

* Wordplay pseudonym: Highlighting the playful aspect of using a scrambled word.

Ultimately, the best way to describe it depends on the context and the specific use case.