The fag cant be the one that wipes out humanity, as that would be a politically correct no-no to have a gay person be evillll.
The robot killing machine is equally impossible as it is too fucking obvious.
A lion as the ultimate evil is kind of out there.
Loli with scars in the first episode seems to be too obvious as well.
My guess is tentacle monster or the 'mother' being the evil ones. Japs love tentalce rape, so that one is for obvious reasons and the pyscho mother enka bitch is the main character, so love from the father brings her back to the good side or some shit.