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1363 Barnett, Adventures of Captain Marvel?
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1246 Catwoman, Johnny Joker
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1243 Wonder Woman, You Can't Do That One Television
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1254 Wonderwoman, Fantastika vs Wonderwoman?
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1418 Spider Web, Johnny Joker
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1363 and 1254 are incorrect for both name and source. For 1254, there's actually a single letter difference, not simply a space difference. The rest are correct; list updated.
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Updating the clues:
1099: Original TV show character; 10s; owner of some sort of music company
1117: From a commercial; based on comics; 80s; Action Comics; seen in commercial for breakfast item
1126: Original TV show character; 10s; salvage worker
1159: From a TV show; based on comics (comics version has different real surname); 20s; Steel, the Indestructible Man; high ranking in the military
1163: Original TV show character; 90s; first name is something in outer space
1165: Original TV show character; 80s; briely dated main character
1169: Original TV show character; 10s; model
1170: From a commercial; based on comics; 00s; All-Star Comis; spins to transform
1172: Original TV show character; 10s; junkyard owner
1183: From a commercial; based on comics; 10s; Detective Comics; has henchwoman
1190: From a TV show; based on comics; 10s; Doom Patrol; activist
1195: Original TV show character; 20s; wife of villain
1196: Original TV show character; 00s; scientist
1205: From a TV show; based on real person; 20s; writer
1224: Original movie character; 10s; robber
1227: Original TV show character; 00s; owned by major character
1232: From a TV show; based on comics; 90s; Action Comics; non-speaking role (a bit surprising in this context)
1240: From a TV show; possibly inspired by comics character with different name; 10s; Brave and the Bold; geokinesis powers
1251: From a TV show; based on comics; 10s; Detective Comics; government agent under false pretenses
1252: Original TV show character; 10s; daughter of 1126
1254: From a movie; based on comics (slightly different name; one letter difference); 70s; All-Star Comics; seen in non-English language movie
1273: Original TV show character; 80s; restaurant owner
1285: Original TV show character; 10s; clown for hire
1289: Original TV show character; 20s; not a teacher per se but in charge of youth
1293: Original TV show character; 00s; key associate of secret society
1294: Original TV show character; 10s; soldier turned doctor
1301: Original TV show character; 10s; high school student
1304: Original TV show character; 10s; adoptive daughter of major character
1315: Original TV show character; 10s; private investigator
1321: Original TV show character; 10s; religious leader
1322: From a TV show; based on comics (slightly different surname); 70s; Action Comics; reporter
1328: Original TV show character; 90s; scientist
1342: Original TV show character but probably named after song; 10s; song is name of character; assassin
1347: Original TV show character; 00s; security guard
1349: From a commercial; based on comics; 00s?; Action Comics; reporter
1362: From a TV pilot; based on comics; 00s; Adventure Comics; appropriately for a character form a pilot, seen flyiung a plane
1363: Original movie serial character; 40s; henchman
1369: Original movie character; 00s; criminal who heard voices in his head
1380: From a TV show; based on comics; 00s; Batman; attended some sort of event
1382: Original TV show character; 80s; fiancée of recurring character
1385: From a commercial; based on comics; 70s; Action Comics; seen in commercial for a particular day of the year
1388: Original TV show character; 10s; pet given as Christmas gift
1391: From a TV show; based on comics; 20s; speedster
1394: From a TV show; dressed as someone based on comics; 80s; Action Comics; details sparse but I think he was at a costume party
1395: Original TV show character; 70s; played by a very famous movie star
1396: From a TV show; based on comics; 80s; Detective Comics; may have appeared on the news earlier but was definitely seen on a talk show (in real life)
1398: From a commercial; based on comics; 10s; Detective Comics; helped rescue partner from villain
1400: From a TV show; based on comics; 90s; Batman; seen in a diner
1402: From a TV show; dressed as someone based on comics; 20s; Detective Comics; dressed for Halloween
1403: From a commercial; based on comics; 10s; Batman; gets tied up by opponent
1407: From a commercial; based on comics; 00s; Action Comics; makes his costume expand
1409: From a TV show; based on comics; 00s?; Detective Comics; seen in spoof of a certain kind of movie
1410: From a TV show; based on comics; 90s; Detective Comics; attends some sort of event
1412: From a music video; based on comics; 90s; All-Star Comics; possibly other superheroes in same video but due to how everypone's dressed, she's the only one who is reasonably discernable
1413: From a music video; based on comics; 90s; Action Comics; is the subject of the music video
1421: From probably multiple shows simultaneously; dressed as someone based on comics; 20s; Action Comics; seen at a real life event
1423: From a TV show; based on comics; 10s; Superman; some sort of military officer
1427: Original TV show character; 10s; had magic powers
1433: From a TV show; dressed as someone based on comics; 20s; Detective Comics; major character on show
1435: Original TV show character; 20s; while original, shares name with someone from mythology
1436: From a commercial; claimed to be someone based on comics; 90s; Detective Comics; not dressed as the superhero he claims to be
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Adding tally. As always I've hidden first-timers with a clue
Constantine TV 4
Krypton 4
SNL 4
Bradesco Seguros commercial 3
Flash 1990 3
Smallville 3
Black Lightning 2
[non-DC comedy/horror series] 2
Gotham 2
Human Target (2010) 2
Naomi 2
Stargirl 2
Aquaman (pilot) 1
Batman TV 1
Batman and Robin 1
Cha Cha Cha 1
[live televised event] 1
Conan 1
The Dark Knight 1
[sports related commercial] 1
Flash (modern series) 1
Hart to Hart: Murder is a Drag 1
[supporting character themed music video] 1
Joker 1
Legends of Tomorrow 1
Lois & Clark: The New Adventures of Superman 1
[talk show]
El Palacio de Hierro commercial 1
The Sandman 1
[candy commercial] 1
[commercial for something that can be worn] 1
[commercial for some sort of spread] 1
[superhero themed music video] 1
Swamp Thing (1990s series) 1
Titans 1
[non-English language superhero movie] 1
Watchmen (TV) 1
Wonder Woman 1984 1
Wonder Woman tv series 1
Woolworth/Woolco Halloween commercial 1978 1
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1304 Rosie Abar, Watchmen TV
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1394 District Attorney Randolph Burlington (character - actor was Owen Orr) as Superman, Hart to Hart "Murder is a Drag"
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1224 Richie, WW1984
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1369 Kilson, Dark Knight
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1205 William Shakespeare, Sandman
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1385 Superman, Woolworth /Woolco advert 1978
Didn't realise there were (at least) two of these ads, with a different Superman costume in the second one.
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1170 Wonder Woman, El Palacio de Hierro commercial
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1183 Riddler, Bradesco Seguros – Vai que... Batman & Robin enfrentando o Charada
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1398 Robin, Bradesco Seguros – Vai que... Batman & Robin enfrentando o Charada
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1403 Catwoman, Bradesco Seguros
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1362 Atlanna, Aquaman pilot
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1363 Evans, Batman and Robin?
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1400 Catwoman, Cha Cha Cha
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1285 Randall, Joker
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1395 JP Hadley, Wonder Woman TV
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1363 isn't Evans. The rest are correct; list updated. JP Hadley was played by Roy Rogers, probably the most famous guest star on the series. Uncovering obscure stuff like the multiple Woolworth/Woolco commercials is definitely part of the fun of creating these.
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1363 Ives, Batman and Robin?
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1165 Judith, Flash 1990
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1273 Felix Tomarquin, Flash 1990
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1382 Mavis, Flash 1990
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1240 identifed earlier (p10)
1328 Crown Prince, Swamp Thing 1990s
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1163 Star, Lois and Clark