Who are Harry Potter's enemies?

Voldemort, Crabbe, Goyle, Death Eaters, Peter Pettigrew, Dursleys. Some death eaters include-the Malfoys (but they end up not being totally evil at the end), Bellatrix and Rodophulus Lestrange, Avery, Yaxley, Dolohov, Fenrir Greyback, Barty Crouch Jr., Igor Karkaroff, The Carrows, Umbridge...and Harry hates Severus Snape, who appears to be an antagonists until the end, when it's proven that he's a good character.