Character » G. B. Blackrock appears in 77 issues.
The Transformers
Revolutionaries
Classic Transformers
The Transformers: Regeneration One
Transformers: Unicron
Optimus Prime
Transformers: IDW Collection Phase Two
The Transformers: More Than Meets the Eye
Transformers: Generations
Transformers: The Ultimate Guide
Hasbro Heroes Sourcebook 2017
Transformers: Optimus Prime
Revolutionaries: Crisis Intervention
Optimus Prime First Strike
Revolutionaries: Power and Glory
Transformers First Strike
Hasbro Heroes Sourcebook
Transformers/G.I. Joe: First Strike - Champions
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