The Monitor seemingly made an appearance at the end of Arrow's latest episode, "Present Tense."
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He told the Laurel Lance of Earth-2 that he could restore her world.
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All she had to do was promise to betray Oliver Queen at a key moment.
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Oliver was recruited by the Monitor to help him prepare for the coming Crisis.
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It makes little sense for the Monitor to be working against Oliver at this point.
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It makes more sense if Black Siren's "Monitor" is the Anti-Monitor in disguise.
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There is already evidence of the Anti-Monitor interfering in Earth-1's affairs and history.
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The big question is will Black Siren accept the offer, Monitor or Anti-Monitor?
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