Five evil brothers who are the villains in the comic
Mage by
Matt Wagner. They are
humanoid, have grey skin and lack body hair. In addition they are equipped with a poisonous thorn on one elbow (sort of like a scorpion's tail). It is unknown whether 'Grackleflint' is their family name or the name of their race
Each of the brothers have a different special ability: Lazlo is a clairvoyant, Piet is a shapeshifter, Radu can turn himself and others invisible, Stanis can fly.
Then there is Emil. He is the most dangerous of them all, because he alone possesses an independent mind and can think for himself.