First of all, disown your friend.
Bill. —LH
Edit: Fine.
Anonymous, it sounds like you’ll need to retrain your incineroar. Use positive reinforcement by offering him a toy or treat every time he looks at you when you don’t call him … Daddy. Then move on to giving him treats or toys whenever he responds to your voice, then to his proper name. It will be slow going, but with patience, you should be able to train that habit out of him.
Also, disown your friend.
Bill. —LH