Say hello to a younger version of Walter. Fans will meet him on the Fringe episode "Peter."
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This is a scene from the episode "Peter." It's a shot of young Walter.
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How did it all begin on Fringe? With Walter, seen here from a scene on "Peter."
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Fringe takes us bck in time on "Peter." This is a shot of Walter from back in the day.
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Fringe Season 2 Episode 15 Quotes

Walter: Why did you save us?
Observer: The boy is important. He has to live.

It was the first hole, the first breach, the first crack in the pattern of cracks in the places between the worlds, and it's my fault.

Walter