Watch the recording here:
"A botanist that stumbles upon an evil force that changes him in a horrible way"
He ends up becoming Dr. Blight:
"You're going to want to stake your SPS and get vouchers so you can get as many of this guy as possible"
Once he goes through his transformation, he becomes a herald, a precursor to the Chaos legion itself and what's about to happen"
He's instrumental in opening a gateway in Praetoria in the middle of the volcano that unleashes the Chaos legion
Those were idle animations.
