Ventriloquist and Scarface is a major antagonist in Batman: Shadow War. They are a criminal duo with Scarface directing a series of criminal activities and while most believe that Ventriloquist is simply acting out a second personality through the puppet, Ventriloquist sees himself as a reluctant lackey who merely does his puppet's bidding.
Batman: Shadow War
Arnold wesker is a very special case; previously he was a classic example of avoidant personality disorder, which intensified into a violent outbreak that led to his incarceration at Arkham. While here, he graduated into a fully realized delusion that his ventriloquist dummy, Scarface, is an independent personality exerting control over him. It is possible that Wesker is a legitimate example of multiple personality disorder. To probe this further, I've requested that he no longer be separated from his dummy during the treatment sessions.
Additional notes: It could be very difficult to question Wesker due to constant interruptions from Scarface. Wesker's delusion has led him to create a complicated backstory for Scarface, whose personality Wesker seems to have created from poorly written, old-fashioned gangster films.
HOW DOES HE MAKE THE BILABIAL SOUNDS? IT'S UNCANNY.