So far we had the Undying, the Drop and the Disruptor. I’m not sure about the last one, but the first two are connected to both the in-game character as well as the voice actor.
If the Splitter name is also a reference to the real-life person, could it be Jean Claude Van Damme? He is known for doing the splits. It’s been a while since I saw a movie with him but the silhouette seems to fit at first glance.
PS:
Would be funny if he played a (surprisingly buff) scientist as @Melusca suggested.