Circus of Crime Chronologyhttps://en.wikipedia.org/wiki/List_of_Marvel_Comics_teams_and_organizations#Circus_of_Crime

Marvel Age Introductions by On-Sale Date
1962JUL 03HLK003Incredible Hulk[INTROCircus of Crime•COCROS•Ringmaster • Bruto the Strong Man • Clown • Human Cannonball • Teena the Fat Lady]
1964JUN 09ASM016Amazing Spider-Man[Circus of Crime•COCROS•Ringmaster • Clown • Great Gambonnos • Human Cannonball • Bruto the Strongman] xo[Daredevil (yellow costume)]
1964DEC 10ASM022Amazing Spider-Man [Circus of Crime•COCROS•Masters of Menace • Ringmaster • Clown • INTROPrincess Python • Great Gambonnos • Human Cannonball]
1965SEP 9AVN022The Avengers[AVNROS•Captain America • Hawkeye • Quicksilver • Scarlet Witch] [Circus of Crime•COCROS•Ringmaster • Bruto the Strong Man • Clown • Great Gambonnos • Human Cannonball • Princess Python] [Power Man] [Enchantress] Iron Man
1967AUG 1THR145AMighty Thor[][Circus of Crime•COCROS•Ringmaster • Clown • Human Cannonball • Princess Python • Great Gambinos • Bruto the Strongman][Warriors Three][Sif]
1967AUG 31THR146AMighty Thor[][Circus of Crime•COCROS•Ringmaster • Clown • Human Cannonball • Princess Python • Great Gambinos][Sif]
1967OCT 3THR147AMighty Thor[][Loki][Circus of Crime•COCROS•Ringmaster • Clown • Human Cannonball • Princess Python • Great Gambinos][Sif]
1968NOV 12AVN060The Avengers[AVNROS•Black Panther • Hawkeye • The Vision • The Wasp] [Yellowjacket] [Doctor Strange][Circus of Crime•COCROS•Ringmaster • Clown • Great Gambonnos • Human Cannonball • Princess Python] xo[Crystal][Fantastic Four•FFROS•Human Torch • Invisible Girl • Mister Fantastic • The Thing] [The X-Men•XMROS•The Angel • The Beast • Cyclops • Iceman • Marvel Girl]
1969DEC 9THR173Mighty Thor[Loki][Ulik][Circus of Crime•COCROS•Ringmaster • Clown • Princess of Python • Great Gambonnos • Human Cannonball • Mike the Strong Man][]