A look back at the comic references and Easter eggs from last night's episode.

Welcome back to Arrow Annotations, the Internet's number one Arrow column. If you want to know more about the comics that inspired the TV show and random factoids about the latest episode of Arrow, you've come to the right place. Past articles can be found here.

If you enjoy this column, be sure to check out Flash Facts, my new column on Arrow's sister show, The Flash. And feel free to follow me on Twitter at @OH_IGW. Now onto the comic references!

Sarab - Maseo's Assassin name is Sarab, which he says translates into "the Phantom". From the best I can tell, Sarab is the Urdu word for "mirage", which I guess is pretty close to Phantom.

The Phantom is also the name of a famous pulp hero that operates out of Africa. While not a DC character per se, DC did briefly publish a Phantom comic when it was given the publishing rights to the characters in the early 1990s. Those rights later reverted back to its owner, and are now in the hands of Hermes Press, who recently launched a new Phantom comic.

Omega - This episode's flashback revolves around Maseo and Oliver trying to prevent China White from gaining the Omega supervirus. Omega is the last letter of the Greek alphabet and is often associated with endings.

Several DC characters use "Omega" in their names. Omega is a Legion of Superheroes villain and the Omega Men are a group of extraterrestrial freedom fighters that occasionally team up with space heroes such as Adam Strange. Darkseid also can fire Omega Beams from his eyes that can track and disintegrate his target.

The Omega Virus is also the name of a 1990s "talking" board game, in which players attempted to stop a computer virus that had infected a space station.

Yellow Blur - When Felicity obtains the DNA test results from STAR Labs, an article titled "Mysterious Yellow Blur Attacks STAR Labs" is shown on her computer. That's a reference to the latest episode of The Flash, which featured a confrontation between Barry and the Reverse Flash.

Starling City - When Felicity tracks the plane that Merlyn flew from Corto Maltese to Starling City, she pulls up a map of the Western Hemisphere. According to that map, Starling is located somewhere in the Midwest, in what appears to be the Chicago area.

Ollie's snowman - Oliver's snowman ornament (which appears to be handmade) is wearing a green scarf. Thea's snowman, meanwhile, has a red scarf on.

67 Years - Ra's mentions that it's been 67 years since he's faced someone in a trial by combat. In the comics, Ra's was extremely long lived thanks to his control of the Lazarus Pits, an underground pit containing chemicals that can heal injuries and extend its user's life. I wonder if there's a character on the show who could really use a Lazarus Pit about now....

Miniaturizing Weaponry - Ray reveals that he's hoping to miniaturize weapons and technology for his planned ATOM suit. That's a nice little wink to his comic counterpart's ability to shrink.

OMAC/ATOM - Palmer notes that his ATOM suit was based off of Queen Consolidated's OMAC designs. We previously covered OMACs in the Arrow Annotations for "Corto Maltese".

Shirtless duel - Ollie and Ra's both duel shirtless, per the tradition of the League of Assassins. That's a homage to Dennis O'Neil and Neal Adam's Batman #244, which featured Batman dueling Ra's al Ghul shirtless in the desert. According to Arrow producer Marc Guggenheim, the show would have also filmed a desert duel scene if not for the fact that it's hard to find a desert in Vancouver in October.

And that's it for this year! Thank you for reading and we'll see you in 2015!