Minute Mysteries - Hint 1

The Case: Who is this mystery person?  Can you deduce "who done it" from the clues?



I am a fictional male, but rumor has it that I existed

I have a taste for observation and deduction

I fought against a professor

It’s my business to know what other people don’t


Hint #1:

I am British

I magnify things to look for solutions

My silhouette is famous

Robert Downey Jr. played me in many movies


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