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Circuit Breaker

22 appearances · Bronze Age · 1985–2025
Who is Circuit Breaker?

Bursting onto the scene in Secret Wars II #3 in 1985, Circuit Breaker is one of Marvel's more intriguing Bronze Age creations, born from the collaborative vision of Jim Shooter and Al Milgrom. Her story has unfolded primarily across the pages of The Transformers, where she shares the stage with some of the most iconic mechanical warriors in pop culture — Optimus Prime, Megatron, Starscream, Shockwave, and Wheeljack — making her corner of the Marvel Universe genuinely electric. The fact that her presence has been collected and revisited across roughly four decades, from 1985 all the way into the 2020s, speaks to a lasting resonance that casual fans might not expect from a character outside the main superhero line. If you've never explored Marvel's Transformers era, Circuit Breaker is a compelling reason to start digging.

Secret Wars II
#3
★ First appearance
Secret Wars II #3
Sep 1985

Appearances

Secret Wars II (1985)
#3
Transformers: Regeneration One 100-Page Spectacular (2012)
Transformers Compendium (2025)