Yito did you notice that the level refurbishment for the the highest berserk ability is the same as Speeds level I'm pretty sure that will either come into play in the series or Pkm 150 just likes level 98
Well your right Pkm 150 did confirm their will be a category 3 pokemon hunting Flare or some other know category 3 character but probably Flare. So Flare run their coming to kill.
Or you know the stage 1 and 2 virus actually want to eat him and aren't in control of any of their actions stage 3 still has their sanity so I think it's less likely probably the rarest form the virus can take.