here that Poul Anderson's works include two extraterrestrial counterparts of Sherlock Holmes, a Martian and a Hoka, that reminded me of a previous occasion when I said that there were two extraterrestrials, one of them Martian. I traced it to here: the founding members of the Justice League of America included two extraterrestrial exiles, a Martian and a Kryptonian.
The Martians are a much maligned set of speculative species. How many different versions of Mars and Martians are presented respectively by HG Wells, Robert Heinlein and Poul Anderson? Each has several. Some answers might be found earlier on the blog.