Faction Paradox mask

Members of Faction Paradox traditionally wore ceremonial masks made of bones.

Justine and Manjuele wore masks made from the bat-like skulls of Time Lords from a history where the Time Lord-Vampire War was lost. (PROSE: Alien Bodies)

Christèmas' mask was made from a narwhal skull. (PROSE: Weapons Grade Snake Oil)

Belle's mask was painted with streaks of blood. (PROSE: Panda and the Airship)

Francesca wore a mask made of synthetic bone.

In the late 18th century, one mask fell into the hands of the Secret Service, who kept it in their private collection. The Royal Society frequently requested they be allowed to scientifically examine the mask, but they never got a chance to do before it was lost at the turn of the 19th century. (COMIC: Political Animals)