Brainiac

Action Comics #242 (The Super-Duel in Space)
Action Comics #544-546
Superman v1 #167
Whatever Happened to the man of Tomorrow
Adventures of Superman #438
Panic in the Sky :
* Action Comics #674
* Superman Man Of Steel #9
* Superman v2 #65 (Second Strike)
* Adventures of Superman #488
* Action Comics #675
* Superman Man Of Steel #10
* Superman v2 #66
* Adventures of Superman #489
Action Comics #866-870 (Brainiac)
Superman Adventure #3
Superman Adventures #22-23 (War Games)
Superman Adventures #39