Is it legal to use celebrities in your app?

Question

Mobile development

Suppose there is an android/ios application, is it possible to use the image of a celebrity (actor, singer, politician) in your application - without the permission of the celebrity itself? For example, not a direct photograph, but a rendered version, a 3D model or a caricature.
And let's say change the name, as an example:
Take the name: Arnold Schwarzenegger, and write in the application: "iron Arnie."

Answer 1

According to Sobchak, she always sues in such cases and wins.
https://twitter.com/xenia_sobchak/status/433180253...
https://twitter.com/xenia_sobchak/status/433181024...