A look at the Easter eggs from last night's episode.

It's that time again. Here's this week's Arrow Annotations, covering all the Easter Eggs we could find from last week's episode.

Brion Markov – The bald scientist killed in the opening minute of the show is Brion Markov, better known as the DC superhero Geo-Force. In the comics, Markov is the prince of Markovia and longtime member of the Outsiders. Geo-Force is able to manipulate the earth’s gravity field and project lava.

Geo-Force has some history with Slade Wilson. In the comics, Brion’s younger sister, Tara Markov had a creepy romantic and business relationship with Deathstroke (she was 15, he had children older than her). Tara, who possessed earth manipulation powers, infiltrated the Teen Titans as a spy for Deathstroke and helped him kidnap most of the team. After Nightwing and Jericho Wilson (Deathstroke’s son who has possession powers) staged a rescue, Tara went berserk and tried to kill both the Titans and Deathstroke.

In the 2006 Justice League of America series, Geo-Force learned that Deathstroke injected him with a serum that gives him powers similar to Deathstroke. Deathstroke hoped to use Geo-Force as a spy against the Justice League, but the plan ultimately backfires when Geo-Force brutally attacks and nearly kills Deathstroke in a suicidal battle. During the battle, Deathstroke also reveals that he had injected Tara with the same serum, causing her to go insane.

This isn’t the first time that Markov’s been used to destroy population centers. In the 2011 event Flashpoint, Aquaman captured Markov and used his powers to sink most of Western Europe into the ocean. Of course, that event took place in an alternate universe (sorta) which got reversed (sorta), so it's all good.

Markov was played by Eric Floyd, who previously played an Observer on Fringe.

Ferris Air – The commercial airliner that Fyers plans to shoot down is owned by Ferris Air, a company long associated with Green Arrow ally Hal Jordan, the Silver Age Green Lantern. In the comics, Ferris Air is a subsidiary of Ferris Aircrafts, an aviation company specializing in advanced aviation concepts. The company is owned and operated by Carol Ferris, Hal Jordan’s longtime romantic interest and partner. Jordan has often been employed by Ferris as a test pilot. Jordan’s father also worked for the company, and was killed while flying an experimental jet. Jordan’s first encounter with his mentor and later nemesis Sinestro came while flying a Ferris aircraft. Sinestro caught and blew up the Ferris airplane to teach Jordan to always wear his Green Lantern ring and later reassembled the plane to showcase the ring’s capabilities.

Ferris Aircrafts was also featured in the Green Lantern movie, but we’d all rather forget about that.

Judge Grell – Grell, who’s been mentioned in several episodes, is named after longtime Green Arrow writer/artist Mike Grell . Grell drew the police sketch of the Hood that we saw in the police station this episode.

Why So Serious? - Tommy asks Ollie “Why so serious?”, a callback to a phrase used by the Joker in The Dark Knight. Arrow borrows some of the realistic style from the Nolan Batman series, so it’s nice to see the movies get a call out.

And that's it for this week. Stay tuned for the final installment of Arrow Annotations (at least until September) next week.