its that dude in marble hornets that likes to yell at people for having dogs, he's also played by Joseph DeLage who is also shown in Troy wanger's (creator of {marble hornets}) separate channel "THAC TV"
Alex Kralie is basically just some psychopath in a horror web series that hates simple plan and tends to shoot Jay and break tim's leg with a rock.
"You brought your dog!"
Sarah: "Alex-"
"MEMORIES YOUR LINES"