The news broke recently that Stephen Rider has joined the cast of Daredevil Season 2, alongside Jon Bernthal and Elodie Yung, to add another Marvel comics character to the popular Netflix show.
With the lineup growing little by little, and the highly anticipated Jessica Jones and the rest of the Marvel Netflix shows just on the horizon, the Marvel Cinematic Universe is looking more exciting by the second.
We've known for a long while now that The Walking Dead's Jon Bernthal will be portraying popular anti-hero vigilante Frank Castle A.K.A. the Punisher in Season 2. Though we're being kept almost entirely in the dark as to plot details showrunner Marco Ramirez has described the upcoming season as "Daredevil vs. the Punisher."
Punisher as a character tends to go against the typical hero vein, a ruthless vigilante who wages war on criminals, the mob in particular, after his family was killed in a mob shootout. He's an army vet, weapons expert and skilled fighter/martial artist, trained in stealth and guerrilla warfare. Psychologically troubled and brutal, he has no problem with murder/kidnapping/torture in the same way that typical superheroes do, and as such is classed as an anti-hero.
Punisher has been around in the comics since the early 1970s, and has had a few cinematic outings of his own since then (all of which were fairly poorly received, if fun). He first appeared as a villain/antagonist of Spider-Man, the vigilante going after the web-slinger when Spidey was framed for the apparent murder of Norman Osbourne (Green Goblin). He would later team up with a multitude of superheroes, Daredevil in particular, though not without ideological clashes.
Described only as a "mystery woman from Matt Murdock’s past", we don't know very much about the MCU Elektra yet. What we do know is that her appearance will shake up Matt's life, and probably not for the better.
In the comics the Greek assassin Elektra Natchios has constantly switched between hero, anti-hero, and villain, sometimes supporting and sometimes opposing Daredevil (such as when she was hired by the Kingpin to assassinate him). She's also been one of the more prominent love interests throughout the series run, despite her background as an assassin. She first met Matt Murdock (Charlie Cox) at university (as was alluded to in a flashback episode in Daredevil Season 1). In the comics they fell in love and Matt revealed his superhuman senses to her.
Following the accidental death of her father at the hands of a policeman, Elektra left America to train with Stick (who'll you remember as young Matt's mentor in Season 1). Consumed by rage over her father's death, she eventually became part of the Hand assassins. She later travelled as an assassin for hire and eventually met Daredevil/Matt again. She was later killed by Bullseye, but like most comic book characters she didn't stay dead, eventually resurrected by the Hand and becoming an assassin again.
Elodie Yung will portray Elektra in Daredevil Season 2.
Whilst Elektra and the Punisher will be more involved with Daredevil and his exploits, Blake Towers will likely work closely with the other half of the alter-ego - Matt Murdock.
A minor character in the Marvel comics, Towers was a District Attorney who worked closely with Matt in the courtroom and helped Daredevil out with information when he could (he's kinda like the James Gordon to Daredevil's Batman in a way). Blake Towers actually succeeded Foggy Nelson (portrayed in Daredevil by Elden Henson) in the position of DA. It appeared as though Towers was running a smear campaign against Foggy at this time; though it was later revealed to be the work of villain the Jester, it worked and Towers defeated Foggy easily.
It's yet unknown how Towers will fit into this iteration of Daredevil, given that in the comics he didn't meet Matt and Foggy until later in their careers when Foggy was the DA. All we know is that he's going to be portrayed by Stephen Rider, and will be an ally to Murdock throughout Season 2.
In the comics Towers also worked with other heroes like Captain America (Steve Rogers) and She-Hulk (Jennifer Walters), but it's unlikely we'll see either of them making an appearance in the Netflix Marvel universe (though, She-Hulk, you never know...)