I haven't tested the Roll20 OGL sheet, but Shaped Sheet it does add an NPC with the general stats, but not any abilities, spells, actions, legendary actions or lair actions. *Edit* Adding them to a game using the Roll20 OGL sheet works fine. Shaped Sheet isn't working properly with it as stated above, but I don't know if that is an error of the sheet or if they've used another formatting than the mosters from the other books. *Edit* When dragging a Large or larger creature from the Compendium, the token is not scaled to the right size, they're all scaled to medium size.