What is an assumed identity and what is real?

The Shadow had dropped his assumed identity.

He was known to have worked with Mesaana and Semhirage in carrying out several plans, but even they are unaware of his assumed identity.

While Angona is an assumed identity, his true name remained unclear yesterday.

He knew that there was nothing to be gained by letting the spy understand the extent to which his assumed identity had been compromised.

Thenceforth he retained his assumed identity being generally perceived as Spanish.

The combination of the news she'd brought and her assumed identity as a "princess" seemed to settle their nerves.

He needed to disappear into his assumed identity.

Sakthi gets further and further mangled in more trouble with his assumed identity.

She could be allowed no doubt about her assumed identity.