While the Terminator in Mortal Kombat 11 bares the likeness of Arnold Schwarzenegger, the character is not being voiced by Arnold. That might come as a surprise to many, since the voice we've heard in the trailers so far seems to be spot-on. Turns out the man himself had some say in that, as Schwarzenegger was the one who picked the voice actor to fill his shoes.
Now why isn't Arnold providing the voice for this cameo? Unfortunately we don't have any information on that. It does seem strange that they were able to get his likeness, but couldn't nail down the voice. At least who we do get knows how to do a truly impressive impersonation.