So, I'm writing this existential comic about depression and my main character has an obsession with this real-life artist (let's call him "G" because I am too nervous to say who it is). This artist is very personal to me, and my character. He has been dead for about 20 years and his art emotionally touches people. A lot of his fans (including me) feel a strong connection to him even though we have never met him, because his songs feel so personal to us. When I listen to him, it feels like a warm hug; like he's there in the room. This is how my main character feels too when he listen to G's music. I really want to use this person as a character in my comic to represent that relationship we have with his music, and do it respectfully. G shows up as a ghost in my comic who mentors the main character and helps him develop as a person, and helps him with his suffering through music. They form a friendly relationship that isn't romantic at all. The story is also about G's quest to fly to the afterlife and to finally be at peace, but giant obstacles stand in his way.
I want this comic to be heartfelt, funny, and witty. Adding this person is for the purpose of comedy,commentary and critique on his life, and how we are affected by his music.
However, I am anxious about posting this on tapas, because I don't want to receive backlash by anyone, as this guy was a real person and someone's baby. Hurting someone's feelings does not concern me, but what does is damaging this guy's reputation and using him as an object in my comic, instead of treating him like a real person. I want to respect this person's privacy and am considering changing his name and making a character based off of him.
Real people have been used in fiction (like doctor who episode with Van Gogh) but this guy still has family and friends living around and while he is not as popular as everyone else, and it is unlikely that people will come across this comic, I really do not want to hurt his spirit.
Can my comic be considered fair use, or should I change the name and make a character instead?