A really cool chain tattoo.

This character in the free tattoo design is a mask of Guy Fawkes. There is this great movie: V for Vendetta, which is about a mysterious individual William Rookwood (Hugo Weaving) who wears a mask of Guy Fawkes to cover his face, and changes his name to only V. V's mission is to kill all the doctors who had tortured him at the detention center, and bring back justice to the country. More information about this movie can be found here.

This free tattoo design is a door knocker, which is an item of door furniture that allows people outside a house to alert those inside to their presence. A door knocker has a part fixed to the door, and a part (usually metal) attached to it by a hinge that may be lifted and used to strike a plate fitted to the door, or the door itself, making a noise. The struck plate, if present, would be supplied and fitted with the knocker. Such as this one.

Another butterfly tattoo - this one is colorful.

This free tattoo design contains a character with two faces - very similar to traditional Chinese dragons.