They often have a compulsion. For example, like Magpie in X - Men, they can't resist stealing shiny things. It's not really about need but an inner drive.
Some fictional kleptomaniacs are very sneaky. Irene Adler managed to steal the photograph without being easily detected. They usually have a certain level of intelligence or cunning. And their stealing often serves as a plot device to drive the story forward, creating conflicts and challenges for other characters to resolve.
One famous kleptomaniac in fiction is Oliver Twist. Although his stealing was more out of necessity due to his difficult circumstances as an orphan in a cruel society. Another could be Magpie from the X - Men comics. He has a compulsion to steal valuable and shiny objects.
Jack Dawson is known for his idealism and his ability to see the beauty in things. He is also a bit of a dreamer. Jack Bauer is extremely tenacious. No matter how difficult the situation is, he never gives up in his fight against terrorists. Jack Merridew, on the other hand, is characterized by his ambition for power. He wants to be in control on the island and will do anything to achieve that, which unfortunately leads to his downfall.
Fictional thieves usually have a certain charm about them. Take Catwoman for instance. She has an alluring quality that makes her both a villain and a character that people are drawn to. Also, they tend to be resourceful. Robin Hood had to be resourceful to survive in the forest and steal from the rich undetected. He used his knowledge of the woods to his advantage.
Well, often they have complementary personalities. For example, like Fred and George Weasley. One might be a bit more impulsive while the other is more calculating in their pranks. Another characteristic can be a shared goal. In the case of the Pevensie brothers in Narnia, they all want to save Narnia from evil. They also usually have some sort of bond that is unbreakable, whether it's a blood bond like the Mario brothers or a bond formed through shared experiences like the characters in many adventure stories.
Well, for Friar Tuck, his characteristic is his friendliness. He is fat, which is a bit of a stereotype perhaps, but it also gives an impression of his jovial nature. He is not a strict, aloof monk but one who mingles with outlaws. And he is always ready to help those in need.
Famous antagonists are often very powerful. For example, Sauron in 'The Lord of the Rings' has vast armies and great magical power. They can also be highly intelligent like Moriarty in the Sherlock Holmes stories, who is able to outwit the brilliant detective on many occasions. Another characteristic is their single - mindedness. Voldemort in the Harry Potter series is completely focused on achieving immortality and ruling the wizarding world.
Since I'm not aware of any well - known 'Dagmars' in fiction, I can't really say much about their characteristics. But if there were, perhaps they would have traits typical of the cultures or settings in which their stories are set. For example, if in a Nordic - inspired story, a Dagmar might be strong - willed like the people often depicted in Nordic tales.
Famous fictional riflemen tend to be observant. In many stories, such as those about snipers in military - themed fictions, they need to be able to assess their surroundings quickly. They can calculate distances, wind speed, and other factors that affect the accuracy of their rifle shots. They also usually have a certain level of cool - headedness. When facing danger, they don't panic but instead use their rifle skills calmly to get out of difficult situations.
Many fictional alchemists possess unique powers or abilities. Edward Elric can perform alchemy without a transmutation circle in some cases due to his intense study and practice. They also tend to be a bit of an outcast. Van Hohenheim in 'Fullmetal Alchemist' was alone for a long time because of his secrets and the nature of his alchemical powers. They are often on a quest, whether it's for a powerful object like the Philosopher's Stone or for personal redemption as in the case of the Elric brothers.
Fictional witches often have a connection to the unknown and the magical world. They might have familiars, like cats in some stories. Their clothing can also be a characteristic. The Wicked Witch of the West has her black robes and pointed hat. Their actions are usually guided by their motives, which can be power - hungry as in the case of many evil witches, or to protect as with some of the good witches. They are also symbols in the stories, representing things like temptation, knowledge, or the battle between good and evil.