Tiamat fought Marduk for centuries in Babylon, Athens, Rome, Peking (Beijing), Paris, and London. Marduk thought he lost Tiamat in ancient China.  However, shortly after Marduk appeared in New York, Tiamat appeared in Central Park. It was vaporized by the Ghostbusters after a long battle utilizing both proton streams and a proton cannon atop the Ecto-1. Egon theorized Tiamat and Marduk were in an ecto symbiosis, one couldn't exist without the other.  After Tiamat vanished, Marduk shape shifted into a police officer and left the scene without the Ghostbusters' knowledge.
Based on MythologyEdit
According to Babylonian mythology, Tiamat represents chaos and is a primal goddess of the ocean.
- On page eight of Ghostbusters Volume 2 Issue #15, Tiamat makes a non-canon cameo on a page of Tobin's Spirit Guide.
- On page 18 of Ghostbusters: Get Real Issue #1, on the white board, on the right is a photo of Tiamat.
- On page 11 of Ghostbusters: Get Real Issue #3, a photo of Tiamat appears on the right side of the whiteboard.
- ↑ Egon Spengler (2009). The Real Ghostbusters - "I Am the City" (1987) (DVD ts. 08:33-08:36). Time Life Entertainment. Egon says: "Marduk had an eternal adversary, a giant five headed dragon named Tiamat."
- ↑ Marduk (2009). The Real Ghostbusters - "I Am the City" (1987) (DVD ts. 16:10-16:12). Time Life Entertainment. Marduk says: "I lost him in ancient China."
- ↑ Egon Spengler (2009). The Real Ghostbusters - "I Am the City" (1987) (DVD ts. 20:53-20:56). Time Life Entertainment. Egon says: "I suppose they couldn't exist without each other. Ecto symbiosis."