Re: Fringe 5x07 - "Five-Twenty-Ten" (Discussion, Spoilers!)
Peter is definitely got the Observer's speech patterns and mannerisms.
No doubt about it. It's almost scary to watch the transformation.
Could this be why the Observers wanted all traces of him removed from the timeline to begin with, after the incident with the Machine?
"I gotta find a way, 'cause the road is dark, gotta light my way." - Joan Jett & the Blackhearts, 'Brighter Day'