Besides Dumbledore, he is also the only wizard ever known to be able to apparate silently. Voldemort was also said to fear one wizard alone, Dumbledore.
The "most faithful servant" is Barty Crouch Jr., who has already been in place at Hogwarts working for Voldemort. The three dead include Evan Rosier, Wilkes, and Regulus Black.
Bellatrix Lestrange was Voldemort's most loyal Death Eater. There's no doubt that Bellatrix had an obsessive and utterly unhealthy interest in him. She went to any and all extents to make him happy. This was something that Voldemort deeply appreciated.
Winner: Snape
The kind of versatility in magical abilities that Snape displayed was almost around the level of Albus Dumbledore and Voldemort, making him easily more powerful than the average wizard and even the members of the Order of the Phoenix and the Death Eaters.
Bellatrix was an evil woman, Voldemort was the personification of evil. Bellatrix was naturally a bad person, there's no denying that. But: she had a prejudiced family, was put in Azkaban for twelve years and she also feared Voldemort.
Severus Snape
Snape's careful planning saved the day many times. If this list spoke to emotional intelligence, there'd be a different conclusion - terrorizing eleven-year-olds and staying hung up on your high school crush for literal decades are sure choices - but Snape was definitely the smartest Death Eater.
Bellatrix was the first female Death Eater introduced in the books. Bellatrix had a fanatic obsession with the Dark Lord although she was clearly fearful of his magical abilities and absolute power over his forces.
1. Strongest: Bellatrix Lestrange. Everyone's favorite Death Eater was also arguably Voldemort's most talented. Although her dueling skills were of the most impressive of all of her colleagues, her unyielding support of the Dark Lord is what gave her edge.
He did not love anyone, and did not care to be loved. He felt nothing for his family, and only wanted his friends in school to rally around him because he wanted to hold power over them. Bellatrix Lestrange was obviously in love with him and worshiped him, but he only cared for her servitude, not her.
He hated his father for being a muggle, leaving his mother and her heritage, etc. Voldemort hated Dumbledore because he (Dumbledore) was his (Voldemort's) rival. Voldemort hated (or more feared and disliked) Harry because he (Harry) was his doom.
Although Ron isn't the brightest wizard and can be dim-witted and shy at times, he is always there to protect his best friends Harry and Hermione.
Unlike many Death Eaters, when Bellatrix was imprisoned in Azkaban, she did not lie about her loyalty, instead proudly declaring herself to be a follower of Voldemort. Even Voldemort himself had a considerable amount of respect for Bellatrix.
So, had Snape gone all out in the duel against McGonagall in Deathly Hallows, she would have put up a good fight, but he would have prevailed in the end due to his edge in the Dark Arts, Legilimency and Occlumency.
Voldemort. Of course, Voldemort has to be one of the evilest characters in the Harry Potter series. He plots the death of entire groups of people, murders his friends when they are no longer of use to him, and will do anything for absolute power.
1 Umbridge's Evil Tactics Made Her The Most Hated Character In The Franchise.
1 Lord Voldemort
Lord Voldemort is the scariest villain in Harry Potter, if only because he is the series' overreaching villain who successfully evades death more than once.
Snape's fierce devotion to and love of his childhood friend Lily, Harry's mother, is the foundation of that loyalty. After Harry Potter and the Half-Blood Prince, Snape's loyalty was a matter of intense debate among the fans.
Like Tom Marvolo Riddle (aka Voldemort), Merlin was a Slytherin, an ambitious, powerful wizard. He was a wizarding legend, and, of course, more powerful than the Dark Lord. According to the Harry Potter Wiki, Merlin was “arguably one of the most powerful wizards of all time”.
Perhaps Voldemort's biggest mistake was thinking he was invincible. He was extremely arrogant and believed himself to be superior to everyone around him.