I got a pack of the Pirate characters a couple of years ago (3/4?) and they seem solid resin to me - I even rebased one from a plastic slottabase it had been superglued to for priming, trimmed the tab and pinned it's foot, without even a hint of it snapping.
They've been bouncing around my to prime pile for a wile without damage. Thing that's putting me off painting them was their size, tbh.