DOCTOR SPECTRUM (OBATU)

The Avengers #69"Let The Game Begin"

Earliest catalogued appearances of Nighthawk, Speed Demon, Grandmaster, and 2 more.

Oct 1969

No listings

The Avengers #70"Enter the Squadron Sinister!"

Nov 1969

No listings

Iron Man #63"Enter: Dr. Spectrum"

Oct 1973

No listings

Iron Man #64"Rokk Cometh!"

Nov 1973

No listings

Iron Man #65"The Cutting Edge Of Death!"

Dec 1973

No listings

Iron Man #66"Battle Royal!"

Feb 1974

No listings

Giant-Size Defenders #5

Earliest catalogued appearances of Justice, Norma Astrovik, and Arnold Astrovik.

Jul 1975

No listings

Marvel Super Action #31"When Strikes The Squadron Sinister!"

May 1981

No listings

Universe X #11

Aug 2001

No listings

Squadron Supreme #2

Jun 2006

No listings

Squadron Supreme #3

Jul 2006

No listings

Defenders: Strange Heroes #1

Feb 2012

No listings

Squadron Sinister #1"No Honor Among Thieves"

Aug 2015

No listings

Squadron Sinister #2"The War To End All Warriors"

Sep 2015

No listings

Squadron Sinister #3"New Universal Destruction"

Nov 2015

No listings

Squadron Supreme #9

Sep 2016

No listings