The Flash: 5 Major DC Comic-Book Easter Eggs

Inescapable Daughter Cube/Mother Box:

When Jesse was asking Prof. Harrison Wells to let her explore Earth-1 on her own, as she is an adult and can make her own decisions, Prof. Wells told her he would put her in an inescapable daughter cube which was clearly an easter-egg for mother box from the “New Gods” comics written by Jack Kirby.

Jesse’s Wrist Band Going Off:

When the entire Team Flash went to the bar for some good time, Jesse’s band went off when she was about to shake hands of Wally West, it’s clearly shout out to the future kid flash on Earth-1.

Trajectory turning into Blue streak of energy:

When Trajectory overdosed on Velocity 9 drug, she turned blue and vanished in thin air. In comics, this happens to first Reverse Flash or Edward Clariss who vanished into speed force and rematerialized into pure form of energy. She is dead in the comics as well. It’s possible that Zoom may meet the same fate on Flash TV show.

Trajectory’s costume was a tribute to Johnny Quick:

The costume of the first female speedster was a tribute to Johnny Quick from DC comics, he is the Flash of the crime syndicate or Earth-3. 

Speed Mirage:

In the episode, Cisco vibed Jay’s helmet and Team Flash finally figured out that Jay Garrick was the Zoom deceiving them all this time as part of his evil design. They attributed Jay Garrick/Zoom killing Jay Garrick as similar to Prof. Wells/Reverse Flash talking to a speed mirage. But if that was the case Zoom can’t possibly carry speed mirage to Earth-2 and dump it on the floor.