From frenzy_rumble:
"Fortress Maximus was a commissioned piece and created using an Energon Metroplex figure. I used several parts from many other Transformers. The head is an original Fort Max (G1) head, and transforms into the mini-bot Cerebros. Included were about 10 mini transformers. Painted with enamels. Station mode has retracting/folding ramps, air tower and more."
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