At the Bridge of Khazak Dum, the balrog falls down as it breaks but fails to grab Gandalf. He walks outside with the fellowship, but Aragorn informs him that there are no more lines and actions for him until the next book and instructs him to remain hidden and silent.
From then on Gandalf finds various places to remain hidden, including Galadriel's bedroom, until he is written into the story again.
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Thorgrim Odinson
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