Guys, I think Adrien's sign is Gemini. I did some research and re watched the episode 'Animan'. In that episode, we get to know that Marinette is a Leo. I did some digging and found out the best compatible sign for Leo is Gemini. I even checked the traits of a Gemini and Leo and purrsonally felt that it made sense. And I'm a Gemini, too, so I know how Geminis feel. And Adrien's birthday was before Marinette's. Geminis are born between May 21 - June 21. Leos are born between July 23 - August 23. So it kinda makes sense that Adrien is a Gemini. If tou have anything else to add, comment below.