Theres a serious tumblr theory witg Lucas as Uber A..cause mar is always saying Uber A.. Uber is German and the only german sirnamed character is Lucas Goettsman. He has perfect timing to take over the game from mona cause mona reveal was ejd of season 2 and season 2 was when the lucas stuff went down he made that phone call to the help line.. the money fiasco from caleb could have been a cover.. lucas was always teased by ali as hermie short for hermaphrodite which is vasically a term to call someone he/she and monas killer could have been a giy dressed as a girl. Mona was betrayed.. she had to have trusted the person and she trusted lucas. He was working with her. Lucas is still a kid basically and all the focus on uber A being childlike with dolls and blocks..
Its a pretty intense theory and i almost believe it. It would totally blow our minds since we didnt expect him.. and he seems so loveable we all love him and feel bad for him always csuse hes been sidelined a lot.
I think he is Uber A. The man in the hoodie. But the real top A is still out there.. so this is step one. I think the reveal will be Lucas this season and whom he is working for will be next two seasons. I think the people he is working for is a team. Because abc leaked a synopsis referring to A as "they".. lucas could be the right hand man to the other A.