Bullseye is finally making his presence felt in Daredevil season 3 - but Marvel seem to have forgotten that they dropped a Bullseye Easter egg all the way back in season 1. In the comics, Bullseye is one of Matt Murdock's most notable villains, and fans are eager to see how Marvel Netflix translate the character from the comic book page.
Bullseye's comic book origins are rather ill-defined, but in Daredevil he'll enter as FBI agent Benjamin "Dex" Poindexter - a master marksman who is also good with thrown weapons. He appears to have serious mental problems, which his structure at the FBI helps keep in check, but clearly something will break - and Poindexter will become a force to be reckoned with.
Although all but the most dedicated viewers have forgotten it, though, Bullseye was actually teased all the way back in Daredevil season 1. Episode 6, "Condemned," saw one of the Kingpin's men demonstrate tremendous marksmanship skills when he assassinated Detective Blake. The camera lingered slightly over the sniper's bag, and it showed a playing card - Bullseye's trademark. It was only a subtle hint, but it was clearly meant to imply that Bullseye was an established assassin who worked for the Kingpin - a very comic-book-accurate interpretation indeed. It looks as though Bullseye's previous role has been ignored in Daredevil season 3 by showrunner Erik Oleson in favor of telling an origin story.
Oleson's approach makes a lot of sense. While the Marvel Netflix shows have long taken to exploring the backstories of specific characters with a liberal use of flashbacks, in dramatic terms, you don't necessarily want them fully formed; it's much more interesting to watch as a character is transformed into one of the most iconic Marvel villains. That's all the more exciting given Daredevil seems to have been broken in the aftermath of The Defenders. With Bullseye, you have his greatest physical threat taking shape right at the moment he is at his weakest point.
This is the thing with Easter eggs like that Bullseye playing card; they're important at first watch, but a showrunner or director could always choose to forget them and go in a different direction. Easter eggs simply aren't binding. Sometimes they can be dismissed with ease; in this case, does it really matter that one of the Kingpin's assassins had a playing card in his bag? Sometimes they can be a little more difficult to deal with, however; when Marvel Studios showed a complete Infinity Gauntlet in Odin's vault in Thor, they had no idea it would become one of their worst continuity SNAFUs, something that still doesn't make sense when you stop and think about it. Hopefully Daredevil won't need a similar comedy reboot to iron out the canon.