- Harsher in Hindsight: GLaDOS' statements that everypony else thinks Ditzy/Derpy's retarded is lent support after the negative reactions to her appearance in "The Last Roundup".
- Moral Event Horizon: Acknowledged in-story. Chell has managed to leave Aperture behind her and is now living a happy, glorious life as a pony in Ponyville. When GLaDOS still manages to ruin her life and abduct all her friends, Chell decides that she's finally crossed the line.
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