Today's Fact
Checked against independent sources — the issues are cited below.
Nobody brainwashed Frank Castle in Secret Empire Vol. 1 #3 (2017). While a Cosmic Cube-rewritten Steve Rogers ruled America as Hydra's Supreme Leader, the issue closed by revealing Castle working as Hydra's enforcer of his own free will, hunting the criminal Boomerang for information on Black Widow and Maria Hill, and finishing the interrogation with two words: Hail Hydra.
Castle even rebranded for the job. The white skull on his chest sprouted Hydra tentacles, folding the organisation's octopus emblem into his own death's-head. This was not infiltration and not coercion: later accounts stressed that Castle chose the assignment, and the heroes who confronted him about it in The Punisher #224 (2018) treated the choice, not any mind control, as the unforgivable part.
His reasoning was pure Castle logic filtered through old loyalty. Frank had idolised Rogers since his Marine days and had fought beside him in the first Civil War, even refusing to fight back when Rogers beat him for murdering two villains. Offered a Hydra that promised order and executed criminals, and taking his orders from the one soldier he had always trusted, Castle signed up. The Cube had rewritten Rogers. Nobody had to rewrite Frank.
Why It's Obscure
The Cube rewrote Captain America. Castle needed no rewriting at all — just an order from the one man he had never questioned.
Gallery
Comic art of The Punisher and the figures named in today's fact.



Sources
Every claim above checks out against at least two of these independent sources.
Bullpen Bulletins
- Secret Empire: Punisher Chooses A Side in HydraCap's America — CBRCBR's report on Secret Empire #3: Castle confronts Fred Myers for information on Black Widow and Maria Hill, closes the issue declaring Hail Hydra, and wears a skull modified with Hydra tentacles.
- Major Marvel Character Hails Hydra In Secret Empire #3 — ComicBook.comComicBook.com confirms the final-page reveal: Frank Castle hails Hydra of his own accord, his skull shirt altered to include Hydra tentacles, drawn by Hydra's promise of order and his trust in Rogers.