So I found a nice comprehensive compilation of all of Sonya's fatalities. She has:

- Blown fireballs manifesting as kisses that strip people to the bone (see: Chun-li vs. Mai for how Death Battle has treated similar attacks against SF characters)
- Blown purple energy fields manifesting as kisses that cause people to explode
- Split people in half with scissor kicks
- Blown purple gases manifesting as kisses (my GOD MK loved that trope back in the day, didn't they?) that cause people to vomit until they die, following by stomping them hard enough to make their heads explode
- Snapped necks with acrobatics, much like Cammy's CQC ultra
- Garroted people with enough force to decapitate them
- The aforementioned attack drone
- Whatever the heck the fatalities are from MK Armageddon, though those are probably not factored in

Also, I was right, her Special Forces variation gives her the drone.

Now, I was never an MK person back in the 90s, but aside from the blown kisses and garrote, aren't most of these moves actually just extra-powered versions of moves from her moveset? So we can't even wave them away with "fatalities are overblown".

The fact that Sonya has a neck snap is particularly worrisome for Cammy's chances, since that counters any chance of her CQC Ultra being the deciding factor.