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

Did you watch last night's episode of Arrow? Are you wondering what connections the episode has with the comics? Do you like Easter eggs (and not just the brightly colored kind?) Arrow Annotations is here to help, providing some additional notes and background info from last night’s episode. Arrow spoilers follow!

Kord Industries - The episode kicked off with a theft from Kord Industries. This isn't the first time Kord Industries has been mentioned this season. You'll recall that the centrifuge stolen by Cyrus Gold from Queen Consolidated in "The Scientist" was a Kord Industries device. In the comics, Kord Industries is run by Ted Kord, who's better known by fans as the second Blue Beetle. Ted was first mentioned in Arrow during last season's "The Undertaking".

William Tockman - This week's villain is a reimagined Clock King. His origin in the show is similar to those in the comics; Tockman learns he has a terminal illness and decides to rob a bank to provide for his invalid sister after he's gone. He's stopped by Green Arrow, and is incarcerated. While in prison, Tockman learns that his sister has died, and that his terminal disease was misdiagnosed due to his records being switched with those of another patient. Later, the Clock King went on to join the Injustice League, and later the Suicide Squad. During his first mission with the Squad, he and most of his teammates are killed. Tockman was created by France Herron (the co-creator of the Red Skull) and Lee Elias.

Tockman isn't the only Clock King in the DC Universe. The company later introduced a second Clock King with limited precognitive abilities that frequently fought against the Teen Titans. While that Clock King's history (and name) are largely unknown, he shares a costume with the Batman: The Animated Series version of the character, with clock themed glasses and a plain brown suit. Another version of the character appeared in the 1960's Batman series, where he was played by Walter Slezak.

Tockman was played by Robert Knepper in the episode. Knepper's probably best known for his role on Prison Break. He also appeared as the primary antagonist during the fourth season of Heroes, and voiced Kronos in Percy Jackson: Sea of Monsters, which was produced by Arrow's executive producer Marc Guggenheim.

Eddie Walczak - The goon killed by Tockman is named Eddie Walczak. Katherine Walczak is an assistant to Arrow executive producer Andrew Kreisberg on the show. She also scripted several issues of the comic tie-in to the show.

Blue Devil - There's an ad for a Blue Devil movie on the side of the bus that Ollie saves from getting hit by a train. The Blue Devil is a mystic DC superhero, who originally was a stuntman and special effects guy in Hollywood. After being cast as the lead role in a Blue Devil movie, Daniel Cassidy creates a full body devil suit with various special effects. When some of his castmates accidentally release a demon, Cassidy uses the suit to fight the demon, but discovers that the suit has been fused to his body by the demon's mystic energy. Cassidy becomes a member of the Justice League (where he is killed and resurrected twice) and eventually joins the mystical team Shadowpact. A new version of the character has appeared in the New 52, but his backstory is presently unknown.

FYI, here's the Blue Devil ad from the bus in it's full glory, courtesy of Marc Guggenheim's Twitter.

MacGregor's Syndrome - Sara and Felicity learn that Tockman is afflicted with MacGregor's Syndrome, a terminal lung disease. MacGregor's Syndrome played a major role in the 1997 movie Batman & Robin. In the movie, both Nora Fries, wife of Arnold Schwarzenegger's Mr. Freeze, and Alfred both suffer from the disease. Freeze eventually gives Batman the cure to the disease.

52 Nelson Way - Tockman lives on 52 Nelson Way in East Starling City. DC has a thing for the number 52, and Diane Nelson is the president of DC Entertainment, and oversees all comics, movies and television shows involving the DC characters.

Channel 52 - Speaking of the number 52, Tockman operates out of a stolen Channel 52 newsvan. You'll recall that Channel 52 appears in the back of every current DC comic as a way to cross-promote other comics being published by the company. Channel 52 has become the primary news channel watched by Ollie (and every other resident in Starling City) this season.

Delta Charlie 52 - Since we're talking about the number of 52, Lance's call sign is Delta Charlie 52, aka DC-52. This has been mentioned in just about every episode, but if I don't bring it up, people will claim that I missed it. I have not missed it. I SEE ALL.

Tempus Fugit - Tockman utters the Latin phrase "Tempus fugit", which means "time flees". In the DC Animated Universe, the Clock King's name, Temple Fugate, is a play off that phrase. The second Clock King in the comics was named "Tem", which is a hint that he's also named Temple.

The Oblivion Bar - Sara mentions she worked as a bartender for the Oblivion in college. In the comics, the Oblivion Bar is a bar frequented by mystical characters of the DC Universe. The bar is located in a pocket dimension, and has entrances scattered throughout the world. Blue Devil served as a bouncer for the bar, and it later became the base of operations for the mystical team Shadowpact.

That's it for this week. Thank you for reading!