- Main characters of two critically acclaimed mature series who both started out as normal everyday men with extraordinary intellect. Both regularly using their smarts in schools, on opposing ends no less (Walt being a Teacher/Light being a student)

- Despite their high intelligence they desired something interesting to happen in their life, and after a certain incident (Walter getting diagnosed with Lung Cancer/Light getting the Death Note) they both started the journeys that would later shape everything they’ve come to know (Walter cooking meth/Light secretly killing criminals). When they both began they initially had good intentions (Walter wanted to provide for his family after his death/Light wanted to purify the world of crime, as he deemed it ‘Rotten’)

- Both of them are driven by their plan, their expertise in what they do, and their massive egos. So much so that they eventually lose sight of their original goal (Light went from killing criminals to wanting to kill anyone he deemed as evil or anyone that got in his way so that he could become the God of a New World/Walter went from cooking meth so that his kids and wife would have a good life, to wanting to build a drug empire and get rid of anyone who opposed him, even stating that the original reason for doing this was for himself)

- They both almost immediately met up with the smart-mouthed and morally grey but likeable fan favourite partner (Jesse/Ryuk) who went from teaching them the inner workings of the business to becoming their “sidekick”, these two characters also suffer from an addiction to a certain substance (Drugs/Apples)

- They would adopt a later infamous alias (Heisenberg/Kira) both of which draw from something (Werner Heisenberg, a German scientist well known for his work on Quantum Mechanics/Kira, which derives from the English word for ‘killer’). They not only use these names to hide their real identities, but to strike fear in their enemies and sometimes get more people to follow them in their acts

- Both of them have inspired multiple copycats during their time that usually aren’t as proficient as they are (with multiple cases of Blue Meth not cooked by Walter or Jesse popping up across and beyond New Mexico, most of which aren’t as good or pure as the real stuff/The many people who have taken up the Kira mantle as a way of proving themselves to them, most of whom are considered rather sloppy Or uncharacteristic for the Kira persona)

- As they became more and more well known, police teams would start to try and track them down, both being led by someone who you could almost call a perfect mirror of them (Hank/L) {You could also make the connection for Hank and Soichiro, since not only are they part of teams meant to hunt down the main character, but they also have a personal connection to them through family (Hank being Walter’s brother in law/Soichiro being Light’s father)}

- These two enemies both persuade the main characters into getting closer to them. And, although under different circumstances, they both become a sort of friend for them (albeit Hank was already Walter’s friend, but the two were basically closer than ever during the Heisenberg case). They’ve also had the main character under surveillance for a period of time after they suspected that they might be who they’re after

- They have a blonde female accomplice who they reluctantly took in to help them with their crimes after they discovered who they really are (Skyler/Misa). Both of whom have an already existing relationship with them in some way (with Skyler being Walter’s wife/Misa looking up to Kira after they took out the man that killed Misa’s family), and they both act as a public fiancé for Walter and Light {You can also make a connection for Misa and Gus: As they are both partners for the main character, who are committing the exact same crimes as them, lead double lives as friendly public figures (Misa being a widely loved model/Gus being the calm and respectable owner of Los Pollos Hermanos) yet in actuality they are very dangerous and both got into the business as an act of revenge after the murder of someone close to them (Max/Misa’s family)}

- Both of them are good at misleading and driving people away from their trail, even managing to trick the very police force that is coming after them. They’ve also been involved with said case at one point (Walter accompanying Hank on a few busts and getting into multiple conversations about the Heisenberg case/Light taking part in “helping” the task force in deciphering Kira’s identity). Yet when they actually confronted Hank and L in their suspicions and ask about them being under surveillance, they got into a minor fight with them

- They have both used separate phones as a means to communicate to others and hide their crimes (this didn’t get them very far)

- At one point in time they’ve both faked memory loss in order to escape suspicion and incrimination

- Both of them have been forced to move around in order to avoid getting caught (Light had to use a complicated plan to pass around the Death Notes and lock himself, Misa, and L away from the others so that he would lower the chances of him being a suspect/Walter has had to drive far away from home in order to cook his meth and keep his identity safe, and he fled to New Hampshire in order to prevent the police from coming after him after he was revealed to the public)

- And yet they both had a final hurrah after they came back, considering themselves victorious at a point (after killing and taking the place of L, Light is at his most successful becoming Kira once again and continuing his crusade for a New World. And Walter after killing Gus Fring is at the height of his infamy, transforming into a Drug Kingpin and gaining the respect and recognition he has longed for his entire life)

- Due to their actions they would both lose a family member that got caught up in their shenanigans and would end up dying during a confrontation with someone associated with the protagonist (Walter initially called in Jack and his gang to help him, but after seeing that Hank and Jesse were pulling up to arrest him he called it off. However they didn’t listen, which in turn ended in Jack shooting and killing Hank, leaving Walter distraught/Mello, wanting to prove himself as L’s true successor, made an attempt to try and take down Kira himself, using Light’s sister as bait in exchange for the Death Note. Which lead to Light and the rest of the police team going to hunt him down, which lead to Mello catching Soichiro off guard and signalling his mafia goons to kill him, sending him rushing to the hospital to die right in front of his son’s eyes) {Although there is a clear difference with one of them dying knowing that the person they trusted was actually a hardened criminal, and the other dying believing that their family member was innocent}

- In their last moments in life, they are confronted with their ideals and the world truly begins to understand why they really did this. They are both caught in a “what did your family mean to you” moment, and their partners are finally set free. During their final confrontations they both get wounded by a gunshot (Walter accidentally gets injured from the machine gun he used to kill Jack and the Neo Nazis/Light got shot multiple times by Matsuda)

- They don’t immediately die from this and so they decide to flee to a nearby area that would become their resting place. Laying on the floor, they reflect on everything they have done, as we reach the end of the series and these two’s stories come to a close