Lex luthor's message

[Simon]

If you go to the wayne tower and find the answering machine on the table and listen some messages, one of the message will be from lex luthor, was superman in the batman universe all this time?

[JonoAMano]

Rocksteady could be teasing other DC characters for future video games. Luthor was pivotal in several Batman comics storylines, including "Bruce Wayne - Murderer" and "No Man's Land." The comics have almost always maintained cross-continuity. If you look at many in-game advertisements, building marquees, background artwork and listen to incidental dialogue in the game there are numerous references, in-jokes or allusions to myriad characters, creators or storylines from the DC Universe:

Superman (militia and fireman dialogue, travel ad)
Flash (militia dialogue and travel ad)
Aquaman (Gotham Gas pilot light sign bears passing resemblance to Arthur Curry's "A" belt logo)
Blue Beetle (Kord Industries, Ted's Electronics)
Booster Gold (poster)
Deadman (holiday float balloon bears mild resemblance to post-mortem Boston Brand)
Dollman (Dolman's Department Store)
Harold Allnut (Harold's Auto Repair)
J'onn J'onzz, the Martian Manhunter (GCPD duty roster, as John Jones)
Harvey Bullock (GCPD duty roster)
Renee Montoya, Question II (GCPD duty roster)
Swamp Thing (militia dialogue and Alec Holland memorial bench inside Miagani Gardens)
The Sandman (Gas masks worn by select rioters bear striking resemblance to headgear worn by both Golden Age 1939 Wesley Dodds and by Vertigo's Morpheus, known as Dream of the Endless. Morpheus the Sandman created by Neil Gaiman.)
Zatanna (magic shop)
Wildcat (cancelled Albert King fight poster features Ted Grant)
The Atom (Ray Palmer locker with logo in Ace Chemicals)
Hawkman / Hawkwoman / Hawkgirl: Thanagarian Nth Metal referenced in periodic element diagram inside Ace Chemicals
Black Lightning (woman seen in distance during evacuation cutscene wears black and blue dress with white piping, reminiscent of Jefferson Pierce's uniform color scheme)
Black Canary (nightclub and militia dialogue)
Birds of Prey (Clock Tower server level screen display)
Veronica Cale (Wonder Woman antagonist, Cale-Anderson Pharmaceuticals building)
Wonder Woman (Wayne Foundation insignia on Bleake Island bears striking resemblance to late 1980s Wonder Woman logo crest)
Green Arrow (Queen Industries, also Catwoman and Jack Ryder dialogue)
Green Lantern (Ferris Mall)
Jiro Osamu, Mr. Unknown (Osamu Tower on Bleake Island, member of Batman Inc.)
John Constantine, Hellblazer (office / shop)
Ocean Master (Sushi Shop; Orm Marius is Aquaman's brother)
Suicide Squad (Belle Reve shop)
Batwoman (Kate Kane's voicemail to Bruce Wayne)
Maggie Sawyer, Metropolis SCU (referenced in Kate Kane's voicemail to Bruce Wayne)
Metamorpho (Simon Stagg was Rex Mason's / Metamorpho's primary antagonist)
Ultra-Humanite (Simon Stagg's albino lab chimpanzee bears a mild passing tribute resemblance to Ultra-Humanite, actually an albino gorilla in the comics, JSA antagonist)
Mr. Mind (Bookworm shop logo bears passing resemblance to Shazam / Captain Marvel antagonist)
Ace, the Bat-Hound (water dish near family portrait and wet bar in Wayne Tower)
The Secret Six (shop)
Project Cadmus (Cadmus Bar)
Royal Flush Gang (nightclub)
Rose and Thorn (corner shop at intersection across from Bank of Gotham on Miagani)
Dr. Milo (Milo's Cocktails)
Guillermo Barrera, Brutale (militia dialogue)
Cluemaster (militia dialogue)
Crazy-Quilt (Quilt's laundromat)
Paul Gambi, the Crime Tailor (Gambi's Department Store)
The Slab (shop or nightclub)
The Laughing Fish (shop or club, tribute to classic 1970s Marshall Rogers Batman storyline)
Finger's (shop, tribute to Bill Finger, 1940s-1950s Batman artist)
Port Adams (location, tribute to Neal Adams, classic 1970s Batman artist)
Robinson (intro crematorium and morgue, tribute to Joker co-creator Jerry Robinson)
Metropolis - home city of Superman (travel ad)
Keystone - home city of The Flash (travel ad)
Santa Prisca - homeland of Bane (travel ad)
Markovia - homeland of Geo-Force and Terra (travel ad)
Vlatava - homeland of Count Vertigo (travel ad)

Mercy Bridge might be a passing reference to Mercy Graves, Lex Luthor's bodyguard.
Perdition Bridge might be a passing reference to the DC-Vertigo "Perdition" graphic novels, source material for the Tom Hanks movie "Road to Perdition."

Those are only the ones I've logged so far. There's probably more.

[Edit: the following video shows a few that I missed]
https://www.youtube.com/watch?v=hua-DRBsfVA&feature=iv

[B. Wiggs]

Holy References Batman!

[JonoAMano]

You found quite a few I missed. Add them here when you get time.

[B. Wiggs]

Will do!

[B. Wiggs]

Dr. Linda Friitawa
http://steamcommunity.com/sharedfiles/filedetails/?id=595212158
Jane Doe
http://steamcommunity.com/sharedfiles/filedetails/?id=595224052
Quorum
http://steamcommunity.com/sharedfiles/filedetails/?id=595214286
Dr. Bradford Thorne (Crime Doctor)
http://steamcommunity.com/sharedfiles/filedetails/?id=595205948
Starro
http://steamcommunity.com/sharedfiles/filedetails/?id=594023496
Earl Cooper
http://steamcommunity.com/sharedfiles/filedetails/?id=594013806
Amertek
http://steamcommunity.com/sharedfiles/filedetails/?id=592742536

[Something Hank]

I really hope they don't CONFIRM the crossover.

[B. Wiggs]

Found another:
Jenna Duffy (Carpenter)
http://steamcommunity.com/sharedfiles/filedetails/?id=596394589

[B. Wiggs]

This one was interesting:
Captain Jon Logerquist
http://steamcommunity.com/sharedfiles/filedetails/?id=596488982

[B. Wiggs]

Zsasz on the CCTV when looking for Barbara:
http://steamcommunity.com/sharedfiles/filedetails/?id=508470558
Credit goes to Elpy

[B. Wiggs]

Scarecrow's Mask from Arkham Asylum:
http://steamcommunity.com/sharedfiles/filedetails/?id=474230585
Credit goes to The Vampiric Crow

[B. Wiggs]

Some more, and possibly a few more:
Juili's Boutique - Julie Madison
http://steamcommunity.com/sharedfiles/filedetails/?id=597144019
Robert "Rob" Holehouse
http://steamcommunity.com/sharedfiles/filedetails/?id=597150267
K.G. Bagel's - KGBeast
http://steamcommunity.com/sharedfiles/filedetails/?id=597157997
Jazzman's Music - Jazzman
http://steamcommunity.com/sharedfiles/filedetails/?id=597165382
Lunaires - Pierrot Lunaire (Unknown)
http://steamcommunity.com/sharedfiles/filedetails/?id=597174720
Professor and Doctor Achilles Milo
http://steamcommunity.com/sharedfiles/filedetails/?id=597277172

[V I D A L]

Messaggio originale di NecroTitan:

If you go to the wayne tower and find the answering machine on the table and listen some messages, one of the message will be from lex luthor, was superman in the batman universe all this time?

There is a bunch of Superman references in Arkham Knight. The thugs on the street mention superman in a few wandom ocasions as "freak from Metropolis"

[B. Wiggs]

The last of them I think:
Buddy Standler AKA Condiment King. A TV comedian who once mocked the Joker.
Joker avenged this by using Mad Hatter's mind control technology, "creating" Condiment King.
http://steamcommunity.com/sharedfiles/filedetails/?id=483756820
Credit goes to THE TENTH

Earnie Chubb
http://steamcommunity.com/sharedfiles/filedetails/?id=599968908
Tenzil Kem AKA Matter-Eater Lad
http://steamcommunity.com/sharedfiles/filedetails/?id=599965441

[Simon]

Welp, thats a ton of easter eggs spoilers.

[DeeUU]

Messaggio originale di JonoAMano:

Rocksteady could be teasing other DC characters for future video games. Luthor was pivotal in several Batman comics storylines, including "Bruce Wayne - Murderer" and "No Man's Land." The comics have almost always maintained cross-continuity. If you look at many in-game advertisements, building marquees, background artwork and listen to incidental dialogue in the game there are numerous references, in-jokes or allusions to myriad characters, creators or storylines from the DC Universe:

Superman (militia and fireman dialogue, travel ad)
Flash (militia dialogue and travel ad)
Blue Beetle (Kord Industries, Ted's Electronics)
Booster Gold (poster)
Deadman (holiday float balloon bears mild resemblance to post-mortem Boston Brand)
Dollman (Dolman's Department Store)
Harold Allnut (Harold's Auto Repair)
J'onn J'onzz, the Martian Manhunter (GCPD duty roster, as John Jones)
Harvey Bullock (GCPD duty roster)
Renee Montoya, Question II (GCPD duty roster)
Swamp Thing (militia dialogue and Alec Holland memorial bench inside Miagani Gardens)
Zatanna (magic shop)
Wildcat (cancelled Albert King fight poster features Ted Grant)
The Atom (Ray Palmer locker with logo in Ace Chemicals)
Black Lightning (woman seen in distance during evacuation cutscene wears black and blue dress with white piping, reminiscent of Jefferson Pierce's uniform color scheme)
Black Canary (nightclub and militia dialogue)
Birds of Prey (Clock Tower server level screen display)
Veronica Cale (Wonder Woman antagonist, Cale-Anderson Pharmaceuticals building)
Wonder Woman (Wayne Foundation insignia on Bleake Island bears striking resemblance to late 1980s Wonder Woman logo crest)
Green Arrow (Queen Industries, also Catwoman and Jack Ryder dialogue)
Green Lantern (Ferris Mall)
Jiro Osamu, Mr. Unknown (Osamu Tower)
John Constantine, Hellblazer (office / shop)
Ocean Master (Sushi Shop; Orm Marius is Aquaman's brother)
Suicide Squad (Belle Reve shop)
Batwoman (Kate Kane's voicemail to Bruce Wayne)
Maggie Sawyer, Metropolis SCU (referenced in Kate Kane's voicemail to Bruce Wayne)
Metamorpho (Simon Stagg was Rex Mason's / Metamorpho's primary antagonist)
Ultra-Humanite (Simon Stagg's albino lab chimpanzee bears a mild passing tribute resemblance to Ultra-Humanite, actually an albino gorilla in the comics)
Mr. Mind (Bookworm shop logo bears passing resemblance to Shazam / Captain Marvel antagonist)
Ace, the Bat-Hound (water dish near family portrait and wet bar in Wayne Tower)
The Secret Six (shop)
Project Cadmus (Cadmus Bar)
Royal Flush Gang (nightclub)
Dr. Milo (Milo's Cocktails)
Guillermo Barrera, Brutale (militia dialogue)
Cluemaster (militia dialogue)
Crazy-Quilt (Quilt's laundromat)
Paul Gambi, the Crime Tailor (Gambi's Department Store)
The Slab (shop or nightclub)
The Laughing Fish (shop or club, tribute to classic 1970s Marshall Rogers Batman storyline)
Finger's (shop, tribute to Bill Finger, 1940s-1950s Batman artist)
Port Adams (location, tribute to Neal Adams, 1970s Batman artist)
Robinson (crematorium and morgue, tribute to Joker co-creator Jerry Robinson)
Metropolis - home city of Superman (travel ad)
Keystone - home city of The Flash (travel ad)
Santa Prisca - homeland of Bane (travel ad)
Markovia - homeland of Geo-Force and Terra (travel ad)
Vlatava - homeland of Count Vertigo (travel ad)

Mercy Bridge might be a passing reference to Mercy Graves, Lex Luthor's bodyguard.
Perdition Bridge might be a passing reference to the DC-Vertigo "Perdition" graphic novels, source material for the Tom Hanks movie "Road to Perdition."

Those are only the ones I've logged so far. There's probably more.

[Edit: the following video shows a few that I missed]
https://www.youtube.com/watch?v=hua-DRBsfVA&feature=iv

Nerd, gimme your lunch money.