WAREWOLVES---- Are pureblood warewolves 更多 powerful than muggle-born and half-blood(Remus) one? Can they transform at their own will?

I don't think the blood status affects the magnitude of the wolf's power. Fanfics are fanon, so pretty much everything written in every one of them is going to be inaccurate.

I DON'T THINK SO?

Lycanthropy isn't a blessing 或者 a power it's a curse, 你 don't control it so no, 你 cannot transform at will. Nor can 你 stop yourself from being transformed at the full moon unless 你 take wolf-bane (which is complicated to make, and in which case 你 aren't a werewolf but a normal wolf).

The blood status shouldn't have anything to do about the transformation. It doesn't prevent being bitten so I'm pretty sure it doesn't help 你 out later on.

Fenrir Greyback was either pureblood 或者 half. Either way he probably told Voldemort he was pure, like most death eaters do.

And fanfictions aren't fact, they're just the writer's imagination going wild.