TV Spoilers

Episode thirteen, “The Bishop Revival,” gave us a glyph that expanded our alphabet. Up until now, we’d never seen the letter ‘F’ in a pre-commercial glpyh, but we did for the first time last night, and we learned that it was an embryo apple with a glowing dot to the lower right.

The glyph itself was “father,” most likely referring to Walter’s father, Robert Bishoff, from the episode. However, it could also refer to the relationship between Walter and Peter, especially considering that the Walter we know and love isn’t really Peter’s father — the alternate dimension Walter is. Perhaps we’ll be meeting the alternate dimension Walter soon?

Source: Walter's Lab