Disclaimer: I own nothing associated with Harry Potter.
Black- A ridiculously reckless and delusional. man who has escaped from Azkaban to murder a rat.
Longbottom- The definition of stupidity. Always blowing up something or another. If I didn't know better he would have been a squib.
Dumbledore- the only man I know who has any decency.
Hagrid- a blundering oaf who thinks he could raise a dragon in secret. Lacks the very skills he needs to be halfway competent at his job. Nearly got his own students killed. Does not seem overly smart.
Weasley- Just like his famous friend, he wears his heart on his sleeve. Extremely untalented, and an overall violent person.
Weasley twins- Cause more trouble than all of the students put together. They both deserve to be locked up.
Lovegood- A ridiculous nutcase. Always trying to convince the class that there are Notrifats hanging from the ceiling. Deserves to be in an insane asylum.
Malfoy- The only student in his year with any trace of talent.
Lupin- An astonishingly weak man. A danger to society and a criminal for letting Black escape.
Granger- A bucktoothed know-it-all who can't keep her mouth shut. A wonder that she has any friends.
And most of all- POTTER. The arrogant attention seeking prat. Just like his father, acting like he is the top of everything. Always getting away with everything by a thin margin just because he is a favorite of Dumbledore's. That dunderhead is always up to things he shouldn't be, and is always trying to save the day. If it weren't for his worthless little friends, he would be nothing.