Yes Unfortunately, copyright law isn't so black and white, so caution is advised.
Hopefully this can shed some light, I do suggest if you don’t understand what is and is not copyright , or how it works? Check out Introduction to Copyrights and 10 Big Myths About Copyright Explained. Also check out the Copyright Crash Course.
Somebody stole from me, what shall I do?
Found a thief? Well the first step is to contact them. It is important to tell them that what they are doing is wrong Your goal in contacting this thief directly, and start by doing the following: Tell them that you own the artwork or character, keep it formal and easy to