G.I. Joe vs. The Transformers IV: Black Horizon #1
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1st appearance of Golobulus, leader of Cobra-La
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1st full appearance of Pythona
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1st appearance of Golobulus, leader of Cobra-La
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1st full appearance of Pythona
Issue Details
| Publisher | Devil's Due Publishing |
| Artist | Tim Seeley |
| Writer | Tim Seeley |
| Published | January 2007 |