Harry potter meets lord of the rings

Shouldn't the lotr characters be the parents? since they are way older?

Yea Gandalf is an Astary the second most powerful being after the Valors and well Astary are immortal

Voldemort was basically immortal because of the Horcruxes. Hagrid would be extremely hard to kill. And Dumbledore was pretty much unable to be beaten because of the Elder Wand, that is, before his planned death.