If you appropriate another artist work, you do not need permission from the artist

I'm not a lawyer, but I can provide some general information. Appropriating another artist's work without permission can violate copyright laws, which protect the original creator's rights to their work. In many cases, using someone else's work without obtaining permission or properly crediting them can lead to legal issues, such as copyright infringement claims. It is generally advisable to seek permission or use works that are licensed under Creative Commons or other similar licenses that allow for certain types of usage. However, copyright laws can vary by country, so it's important to consult a legal professional or reference the specific laws in your jurisdiction for accurate advice.