Changing community name

Hi! I would like to change the name associated with my posts on the Apple Discussions forum. For a handful of reasons, my father stopped using Apple products for a while, and practically gave me this Apple ID account. I don't want to post under my father's display name, so I want to have my name on these forums changed to "44nifty", as that is my username on the vast majority of other websites. I cannot create a new Apple ID at this point, as I have been using this account for a while myself, and I don't believe there's a way to transfer purchases to a new account. Even so, that seems like a lot of effort for what would simply be a text box on most other websites. Again, I don't want to change the name of my iCloud email (#####@icloud.com), just the name that shows on my community posts. It feels wrong to post under someone else's name.