Marco may refer to:
- KAOS agent who operates Knight's Stamp Redemption Center as a front for a munitions depot [Portrayed by John Harding, Episode #102: "The Day They Raided the Knights"].
- CONTROL agent who is also a musician. Marco is unavailable for assignment to rescue Professor Pheasant because, along with Agents Holloway and Curtis, he is in Las Vegas for a gig. [Mentioned, Episode #113: "Pheasant Under Glass".]
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