[zericosmic]

I'll give this a cautious approval.

The ability should be unique to the character/ core and not something mass producable.

The regeneration generally should also be slow, in the sense that the character shouldn't be able to just regrow an entire arm and such mid fight. Like if you lose a conflict, your ass can be defiant about it, but this is not to be used as an excuse to be able to stand up after losing every fight. Basically I'm saying just be responsible with it, and don't make it feel like there's no beating the character. But given the inspiration, i assume that being unbeatable isn't the intention, just mostly that being recoverable is.