Spoilers follow for tonight's episode of The Flash, "Welcome To Earth-2."
Following last episode where Wells revealed he was helping Zoom steal Barry's powers, Team Flash decides to help Wells by heading to Earth-2 to save his daughter.
Tonight's episode is filled with a bunch of Easter Eggs and references to DC Comics characters.
Here are a few I spotted:
When Barry, Cisco and Wells go through the portal, three teasers are shown with what looks to be a Green Arrow (future version that is appearing in DC's Legends Of Tomorrow? or Connor Hawke?); the CBS Supergirl series starring Melissa Benoist (note: The Flash is crossing over in an episode of Supergirl in March), and the 90s John Wesley Shipp Flash (plays Barry's father in the series). Update: Better pics from the portal are included at the end of the article (and you can watch the scene here).
The Justice League mural in the CCPD is replaced by a Justice Society reference with "A Free & Just Society":
Another cool Easter Egg is featured in the home of Iris and Bart Allen (yes, the Earth-2 "Barry" is actually named Bartholomew and they are married). The Earth-2 Barry's mother never died, and the episode saw our Barry call his Earth-2 mother, with the phone having on speed dial: His Dad; his mom and dad (mother get remarried?); Eddie (Thawne?); Bruce (Wayne? - Batman); Hal (Jordan? - Green Lantern); Diana (Prince? - Wonder Woman). The phone conversation also saw a reference to Atlantis (home of Aquaman).
Other Earth-2 Easter Eggs and references:
Henry Hewitt (Demore Barnes) works for Wells/Star Labs (aka villain Tokomak).
The mayor of Earth-2 Central City is Mayor Leonard Snart (Captain Cold).
Detective West is Iris West.
Floyd Lawton is Iris' partner (Suicide Squad's Deadshot).
Joe West is a singer (and can sing in real life).
Caitlyn is Killer Frost.
Robbie Amell is Deathstorm.
Evil Cisco is known as Reverb and has more powers.
I think they closed the portal location that sent Grodd to Earth-2.
I didn't spot them, but Jonah Hex and a Legion ring are also said to be referenced (update: see below).
Did I miss any?
"The Flash" airs on the CW Tuesdays at 8pm ET starring Grant Gustin, Candice Patton, Danielle Panabaker, Carlos Valdes, Tom Cavanagh and Jesse L. Martin.