The Intruder was a series of pre-Adult Swim, Toonami mini-episodes, known as a "Total Immersion Event" or T.I.E. The series encouraged audience participation from the fans, particularly after the 65h episode, which lead to an audience vote over what new engine to outfit the Absolution with. The whereabouts of The Intruder would then remain a mystery until 15 years later in The Intruder II.

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