FangTheCat Doctor Roger would show great interest in their discoveries...
Doctor Roger: "Interesting... No, Fascinating... Well, Considering my predicament, I don't think it'd be safe to stay in home territory, seeing if there are any more Rogues around here... Wait."
Doctor Roger would find a heavily damaged, but still functioning Plant Symbiote, separated from it's host body. He'd pick it up after inspecting it for any remaining vines...
Doctor Roger: (Clears Throat) "Samson, who gave you the orders to attack us?"
The Symbiote would release several pheromones in an attempt to communicate; Roger would then resort to using a Pheromone Translator to converse with it.
Doctor Roger: "Alright... "Guard Smith"? Who commanded him? "Samson No. 7,200,352,116"... Alright, then who commanded them?"
What would next play on his translator would be a warning that the following message would be in an alien language... However, it plays in English for some reason...? Doctor Roger would read it out loud, trying to make sense of it;
Doctor Roger: "What the...? Alright... "Not who he seems, Not who he seems, Not who he seems...?"
The Symbiote would then jolt upon receiving a command from an unknown source; after this, it would begin producing electricity and swelling. Roger immediately recognises what is happening; he throws it in the back corner of the Cafeteria, and then gives out a simple order:
Doctor Roger: "EVERYBODY, BEHIND THE COUNTER! TAKE COVER!"