But wait... the zombies had infected a special human...
theREALslimSHADY
The Assassin v.2
Poor humans, they only have The Scientist to rely on now.
But wait! What is that the zombies have ingested? Radioactive ass?
Makes perfect sense. The assassin who has eaten radioactive gravy has turned radioactive too and now that the zombies fed on his radioactive ass, they inherit his special abilities too!
To the zombies: Yall can now either infect or kill a human. Choose wisely!
+ are you saying i infected you? If so then they'll vote you off. 
