Comment by mcv
That's a really blatant lack of creativity. Even if obviously all of those prompts would make anyone think of exactly those iconic characters (except possibly a different version of James Bond or Lara Croft), any human artist could easily produce a totally different character that still fits the prompt perfectly. This AI can't, because it really is just a theft machine.
To be honest, I wouldn't mind if AI that just reproduces existing images like that would just be banned. Keep working on it until you've got something that can actually produce something new.
The prompt is what's lacking creativity. The AI knows it, and produced the obvious popular result for a bland prompt. Want something more unique? Write better prompts.