Yes. Duo is the subject here. But there is a difference.
"Even Duo is here." → "Duo bile burada." (There are a lot of people here, Duo is one of them.)
"Duo is even here." → "Burada bile Duo." (Wherever I go, I find Duo there).
PS: For the second example, "Duo burada bile" sounds like an incomplete sentence. Therefore, I changed the word order. You can place "bile" at the end of sentence, if the sentence refers to previous sentence.
For example: "No one can beat him. Even Duo." → "Hiç kimse onu yenemez. Duo bile."