Bats and bat tattoos are often associated with a dark and sinister history, and seeing how the go hand in hand with vampires, i can see why this is widely believed to be the case.
However, the Chinese culture feels quite the reverse on this notion, and they consider the bat to be a symbol of good luck, longevity and and fulfillment.
Bat tattoo designs are often coupled with a dark Gothic scene of sorts, however they are regularly seen as standalone tattoo designs as well.
Whether you find the bat to be appealing because of its sinister dark nature or perhaps a deeper meaning, its a great looking tattoo designs none the less.