Free Legal Advice

Hi, I am an animator. I also have a youtube channel on which I upload animated videos. Now, I started my youtube channel after seeing the animated videos of a channel " MAKE JOKE OF ". Now, recently he sends me a copyright strike on my video (more specifically, on my cartoon characters). And, I think there is no resemblance between my channel cartoon characters and his channel cartoon characters. Also, I didn't copyrighted my cartoon character. But since there is no resemblance how can I handle this matter?