When casting out the tattoo demons, I would cast out all demons that come to mind. If there is the slightest thought that it could have transferred to you, then cast it out in the name of Jesus Christ of Nazareth. You might want to look at the place and the person who gave you the tattoo for clues. Look at the problems that your tattoo artist had. For example, did he or she like to get drunk? Were they into pornography? Divorced? Whatever symbols that they worked with, would need to be cast out also, just in case they may have transferred themselves to you. Keep in mind, that the demons often lay dormant for years, before coming out to harass you. They can also use you as a conduit in order to transfer themselves to someone else. (For example, you may never know you had the demon of pornography in you, but suddenly your friend gets hit with those desires. The demon could have transferred itself from you to your friend.)
List of possible demons to cast out: skulls, bloodletting, tattooing, fire, shamanism, mysticism, roots, occult, paganism, demonism, baal, hell, cannibalism and vampirism, (especially if you seen your tattoo artist lick the blood that came from your tattooing,) serpent worship, death, priest-craft, magic, heathenism, sun worship, darkness, resentment, rebellion, witchcraft, deviancy, defiling, adultery, criminal, homosexuality, lesbianism, sexual perversion, alcoholism, drugs, violence, depression, sickness, regret, defile,, worldly, idolatry, pornography, hopelessness, anger, rage, self-righteousness, hate, un-forgiveness, satan, apathy. If your tattoo artist used specific names of the tattoo they were applying to your skin, then cast that particular name out as well.
There are some ministries out there, that are willing to help you remove the tattoo for free or at low cost. You might try doing a search on line to see if there are any in your area.
I had hoped to delay the posting of this topic, until we had met someone with tattoos that wanted to get rid of them. But sadly, as of this date, no one we know personally who has tattoos, believes that they could have any tattoo demons. They refuse to have them cast out in Jesus name. And they do not want to get rid of their tattoos. So, we are uncertain if the demons can be removed, with the tattoo still remaining. My guess is that they could at least be bound up in the name of Jesus, so they could not cause anyone any problems. I suspect that those tattoos of satanic origin (skulls, pentagrams, snakes, demons, etc.,) would act like a doorway for the demons to enter back in, simply because of their picturesque symbolism. Demons are attracted to those kinds of symbols. It is like a welcome mat to them.