Every age of comics has special 1st appearances. The 70s and early 80s are no exception as you can see below.

SHADE the CHANGING MAN 1 1977 1st APPEARANCE RAC SHADE TV MOVIE Key issue
SHADE the CHANGING MAN 1 1977 1st APPEARANCE RAC SHADE TV MOVIE Key issue
$7.50
Time Remaining: 1h 7m
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DC Comics DETECTIVE Comics 311 BATMAN vs 1st Appearance Of Catman FN 55
DC Comics DETECTIVE Comics 311 BATMAN vs 1st Appearance Of Catman FN 55
$224.95
Time Remaining: 1h 35m
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THE MAN CALLED NOVA 1976 1 1ST APPEARANCE  ORIGIN High Grade
THE MAN CALLED NOVA 1976 1 1ST APPEARANCE ORIGIN High Grade
$69.99
Time Remaining: 2h 10m
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Lot of 13 INVADERS Baron Blood Union Jack KEY 1st APPEARANCE Schomburg Kirby
Lot of 13 INVADERS Baron Blood Union Jack KEY 1st APPEARANCE Schomburg Kirby
$99.99
Time Remaining: 2h 27m
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New Gods 3 CGC 94 White Pages Origin And 1st Appearance Of The Black Racer
New Gods 3 CGC 94 White Pages Origin And 1st Appearance Of The Black Racer
$233.75
Time Remaining: 2h 28m
Buy It Now for only: $233.75
MASTERS OF THE UNIVERSE1 CGC 96 1st full comic Appearance HE MAN
MASTERS OF THE UNIVERSE1 CGC 96 1st full comic Appearance HE MAN
$57.99
Time Remaining: 2h 35m
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STAR WARS 42 1st Appearance BOBA FETT GD Marvel NEWSSTAND ESB 1980 LAST JEDI
STAR WARS 42 1st Appearance BOBA FETT GD Marvel NEWSSTAND ESB 1980 LAST JEDI
$14.99 (1 Bid)
Time Remaining: 2h 36m
AVENGERS 83 CGC 92 1ST APPEARANCE VALKYRIE 1ST LADY LIBERATORS THOR RAGNAROK
AVENGERS 83 CGC 92 1ST APPEARANCE VALKYRIE 1ST LADY LIBERATORS THOR RAGNAROK
$399.99
Time Remaining: 2h 41m
Buy It Now for only: $399.99
Alpha Flight 1 1983 1st appearance Puck Marrina Omega Flight Marvel A3
Alpha Flight 1 1983 1st appearance Puck Marrina Omega Flight Marvel A3
$9.00
Time Remaining: 2h 48m
Buy It Now for only: $9.00
DC MISTER MIRACLE 8 June 1972 vintage comic 1st appearance of Boy Commandos NM
DC MISTER MIRACLE 8 June 1972 vintage comic 1st appearance of Boy Commandos NM
$79.99
Time Remaining: 2h 58m
Buy It Now for only: $79.99
WEREWOLF BY NIGHT 32 1975 70 FN VF Condition 1st appearance of MOON KNIGHT
WEREWOLF BY NIGHT 32 1975 70 FN VF Condition 1st appearance of MOON KNIGHT
$620.00
Time Remaining: 3h 26m
Buy It Now for only: $620.00
Avengers  154 CGC 96 OW W Pages 1st Tyrak Appearance
Avengers 154 CGC 96 OW W Pages 1st Tyrak Appearance
$75.00
Time Remaining: 3h 30m
Buy It Now for only: $75.00
X Factor 5 Marvel Comic Book 1st Appearance Apocalypse Alliance of Evil
X Factor 5 Marvel Comic Book 1st Appearance Apocalypse Alliance of Evil
$15.00
Time Remaining: 3h 31m
Buy It Now for only: $15.00
Ms Marvel 18 Jun 1978 CGC Graded 92 1st Appearance of Mystique
Ms Marvel 18 Jun 1978 CGC Graded 92 1st Appearance of Mystique
$151.99
Time Remaining: 3h 50m
Buy It Now for only: $151.99
X Men Uncanny 107 Oct 1977 CGC Graded 94 1st Starjammers Appearance
X Men Uncanny 107 Oct 1977 CGC Graded 94 1st Starjammers Appearance
$206.99
Time Remaining: 3h 51m
Buy It Now for only: $206.99
dc comic firestorm 24  26 1st appearance blue devil no1462
dc comic firestorm 24 26 1st appearance blue devil no1462
$9.33
Time Remaining: 3h 58m
Amazing Spider Man 129 CGC 60 1st Appearance of Punisher 1974
Amazing Spider Man 129 CGC 60 1st Appearance of Punisher 1974
$1,500.00
Time Remaining: 4h 3m
CONAN THE BARBARIAN 1 VF 80  1st appearance of Conan
CONAN THE BARBARIAN 1 VF 80 1st appearance of Conan
$258.99
Time Remaining: 4h 9m
Buy It Now for only: $258.99
NIGHT NURSE 1  1ST APPEARANCE OF LINDA CARTER MARVEL COMICS 1972
NIGHT NURSE 1 1ST APPEARANCE OF LINDA CARTER MARVEL COMICS 1972
$110.00
Time Remaining: 4h 11m
Buy It Now for only: $110.00
THE BRUTE 1 VF NM 90  Origin and 1st appearance from 1975
THE BRUTE 1 VF NM 90 Origin and 1st appearance from 1975
$19.49
Time Remaining: 4h 12m
Buy It Now for only: $19.49
Incredible Hulk 271 CGC 90 1st Appearance Rocket Raccoon Guardians Galaxy Movie
Incredible Hulk 271 CGC 90 1st Appearance Rocket Raccoon Guardians Galaxy Movie
$149.99
Time Remaining: 4h 17m
Buy It Now for only: $149.99
Firestorm 1 1978 FN VF 1st Appearance and Origin of Firestorm
Firestorm 1 1978 FN VF 1st Appearance and Origin of Firestorm
$22.52
Time Remaining: 4h 57m
Buy It Now for only: $22.52
RICHARD DRAGON KUNG FU FIGHTER 5 VF 1975 1ST APPEARANCE LADY SHIVA
RICHARD DRAGON KUNG FU FIGHTER 5 VF 1975 1ST APPEARANCE LADY SHIVA
$19.41
Time Remaining: 5h 19m
INCREDIBLE HULK 133 1ST APPEARANCE DRAXON VG+ TO F
INCREDIBLE HULK 133 1ST APPEARANCE DRAXON VG+ TO F
$7.00
Time Remaining: 5h 23m
Buy It Now for only: $7.00
Iron Man 55 CGC 75 W 1st Appearance of Thanos  Drax The Destroyer
Iron Man 55 CGC 75 W 1st Appearance of Thanos Drax The Destroyer
$825.00
Time Remaining: 6h 30m
Buy It Now for only: $825.00
All Star Comics Justice Society of America 69 Key Issue 1st Appearance Huntress
All Star Comics Justice Society of America 69 Key Issue 1st Appearance Huntress
$7.99
Time Remaining: 6h 35m
Howard The Duck 12 NM Colan 1st Brief Appearance of KISS
Howard The Duck 12 NM Colan 1st Brief Appearance of KISS
$25.00
Time Remaining: 6h 43m
Buy It Now for only: $25.00
The Amazing Spider Man 194 1st Appearance of Black Cat VF 1st Print
The Amazing Spider Man 194 1st Appearance of Black Cat VF 1st Print
$44.00 (16 Bids)
Time Remaining: 6h 56m
IRON JAW 1  2 1975 ATLAS COMICS 1ST APPEARANCE ISSUES
IRON JAW 1 2 1975 ATLAS COMICS 1ST APPEARANCE ISSUES
$19.75
Time Remaining: 6h 57m
Buy It Now for only: $19.75
Ms Marvel 18 1st appearance Mystique 60 cgc
Ms Marvel 18 1st appearance Mystique 60 cgc
$80.00
Time Remaining: 6h 59m
Buy It Now for only: $80.00
OMEGA MEN 3 DC Comics 1983 1st appearance of LOBO FN
OMEGA MEN 3 DC Comics 1983 1st appearance of LOBO FN
$29.99
Time Remaining: 7h 4m
Buy It Now for only: $29.99
AMAZING SPIDER MAN 127 3RD VULTURES 1ST APPEARANCE
AMAZING SPIDER MAN 127 3RD VULTURES 1ST APPEARANCE
$8.99
Time Remaining: 7h 20m
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BATMAN 361 BRONZE AGE DC KEY ISSUE 1ST APPEARANCE OF HARVEY BULLOCK
BATMAN 361 BRONZE AGE DC KEY ISSUE 1ST APPEARANCE OF HARVEY BULLOCK
$30.59
Time Remaining: 7h 20m
Buy It Now for only: $30.59
HE MAN MASTERS OF UNIVERSE SPECIAL PREVIEW MOTU PROMOTIONAL Fn 1st appearance
HE MAN MASTERS OF UNIVERSE SPECIAL PREVIEW MOTU PROMOTIONAL Fn 1st appearance
$19.95
Time Remaining: 7h 21m
Buy It Now for only: $19.95
DC Comics Presents 47 CBCS 90 Newsstand Variant 1st Appearance He Man MOTU F
DC Comics Presents 47 CBCS 90 Newsstand Variant 1st Appearance He Man MOTU F
$194.99
Time Remaining: 7h 26m
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Strange Tales 178 CGC 80 1st Appearance Magus Warlock Begine F
Strange Tales 178 CGC 80 1st Appearance Magus Warlock Begine F
$199.99
Time Remaining: 7h 33m
Buy It Now for only: $199.99
Amazing Spider man 238 Bronze Age Classic Key Issue 1st Appearance Hobgoblin
Amazing Spider man 238 Bronze Age Classic Key Issue 1st Appearance Hobgoblin
$37.00 (16 Bids)
Time Remaining: 7h 38m
X Men 125 PGX 92 1st Appearance Mutant X Proteus 1st Claremont Byrne F
X Men 125 PGX 92 1st Appearance Mutant X Proteus 1st Claremont Byrne F
$99.99
Time Remaining: 7h 44m
Buy It Now for only: $99.99
Atari Force Lot of 4  NM 1st Appearance Garcia Lopez Gerry Conway
Atari Force Lot of 4 NM 1st Appearance Garcia Lopez Gerry Conway
$1.39
Time Remaining: 7h 49m
Buy It Now for only: $1.39
MARVEL TAILS 1 1st appearance PETER PORKER SPECTACULAR SPIDER HAM VF
MARVEL TAILS 1 1st appearance PETER PORKER SPECTACULAR SPIDER HAM VF
$15.00
Time Remaining: 7h 53m
Buy It Now for only: $15.00