Who played a cunning an opportunistic pirate that had been quartermastered under the notorious Captain Flint?
Treasure Island (1920 film):  Charles Ogle, who had played Frankenstein's Monster in the first filmed version of "Frankenstein" a decade earlier at Edison Studios, portrayed Long John Silver. Long John Silver: Long John Silver is a cunning and opportunistic pirate who was quartermaster under the notorious Captain Flint.
Charles Ogle