Darth Vader + Luke Skywalker | Father Son Duo

Darth Vader's (Anakin Skywalker's) personality: Before Anakin Skywalker became Darth Vader, he was a kind person who cared about all of his friends. He wouldn’t give up on them no matter what the cost. Despite his compassionate and sympathetic demeanor, however, he was pretty heartless and aggressive towards people he considered his enemies, most likely due to how he was treated by his enemies. Even before he joined the dark side, his actions proved that he may have been unfit to be a Jedi, so much so that Obi-Wan was cautious around him even after they formed a strong Master-Padawan bond.

The deaths of Qui-Gon Jinn, his wife Padmé, and his mother Shmi, left a deep impact on him; feeling alone and failed, he ultimately embraced the dark side of the Force and his personality changed completely. He was utterly ruthless and intimidating now, driven by rage, though after his defeat and mutilation on Mustafar at the hands of Obi-Wan Kenobi, he was no longer as arrogant and overconfident as he previously was. Although he regained confidence in himself, it was never to the point of being outwardly cocky or conceited. This calm approach made him much more efficient than most of the Sith Order as his pragmatic nature made him less likely to underestimate his foes.

Unlike most members of the Sith Order, Vader was capable of acknowledging and learning from his mistakes, due to the events on Mustafar as he was emotionally traumatized by the experience. He is, however, a bit boastful when dealing with opponents he considers inferior.

Vader remained an impatient man, but generally presented himself as calm and level-headed, as he rarely lost his patience and typically had good control over his emotions, something he was not able to do in his early twenties. Due to his unstable mentality, Vader would often rest and meditate in either his meditation chamber or elsewhere where he would tap into the Force and focus on concentrating his mind. However, his level-headed nature had limits as shown below.

He had an extremely low tolerance for failure and he did not get along with most high-ranking officers in the Imperial military at all.

Luke Skywalker's Personality: Luke Skywalker (born 19 BBY-dies 34 ABY) is the main protagonist of the legendary Star Wars original trilogy and one of the side protagonists in the sequel trilogy.

Finding himself apprenticed to the Jedi Masters, Obi-Wan Kenobi, and Yoda, he soon becomes an important figure in the Rebel Alliance's struggle against the Galactic Empire. In the sequel trilogy, he is the Grand Master of the New Jedi Order and the sole existing Jedi until his new apprentice, Rey, assumes the mantle after his death. In his youth, he was often curious, impatient, looking ahead to the future with little regard for his present surroundings, and even a bit brash. He gets major character development as he turns from a whiny brat to a mature, Jedi master later on in life. He is a human swiss army knife, as he is a fantastic pilot, farmer, marksman, and eventually Jedi master. He is very compassionate and caring towards others; he immediately wants to rescue Leia from the Empire upon learning she's on the Death Star with them and will drop everything to help his friends in need. He believes that Darth Vader, the right-hand man to the all-evil, sinister Darth Sidious, can be redeemed, even though everyone else, including Vader himself, has written him off as too far gone. And he's proved right. He defined the 'main protagonist loses a limb in the heat of an intense battle with a foe' trope. In the second season of The Mandalorian, Luke redeemed his character by having a badass scene where he slaughtered imperial droids in the hallway, much like his father who slaughtered rebel soldiers. He passed away, joining his father and old masters as one with the Force with a feeling of peace and purpose.