There is the ranking of Top 6 Defence Against The Dark Arts Teachers, The number 1 means the Best, While the number 6 means the worst.
*1. Remus Lupin - Because He is Affable, Friendly, Polite, Wise, Intelligent, Reasonable and Kind-Hearted Gentleman, Despite He is Were-Wolf.
*2. Alastor "Mad-Eye" Moody - Because He is Cool and Awesome in his own way, He reminds me of Doctor N.Gin from Crash Bandicoot Video Games.
*3. Severus Snape - He is maybe a Snarky, Sarcastic, Stoic, Icy and Cold Person on the Outside, But He can be a Good Person on the Inside.
*4. Gilderoy Lockhart - Because He is Vain, Narcissistic, Over-Confident, Cocky and Foppish Showboat, But He is very Hilarious.
*5. Quirinus Quirrell - Because He is Shy, Meek, Timid and Nervous, But He is a Plot-Twist Villain.
*6. Dolores Umbridge - Because She is a Monstrous and Sadistic Jerk without any Sympathetic, Reasonable, Redeemable and Positive Qualities.