lack of morals and honor?
Fellback's backstory shows him rescuing Celine from her prison. He WILLINGLY allowed the Editor to wipe his mind in order for the base to be secure in their zone. He conducted himself quite honorably (with evil intent, of course, but honorably).
Dr. Catastrophe's backstory shows his meeting with the Editor. When his daughter got hurt, his only thought was to help her, not on continuing fighting.
Zworgue? His backstory's still running. Evil, yes, but he was loyal to everyone around him, and helped in whatever way he possibly could. Nothing amoral there.
Deception... well, ya know. But the little hornball was more than willing to help the EOU in every way he could once he got into the group, especially since they could provide him an endless supply of women from around the comic worlds.
Celine was a prisoner for most of her life, especially growing up. She had full trust in her father and in those around her, and it's understandable if she was a bit bitter at times from her experience. But she never showed any dishonorable signs.
And the Editor conducts himself impeccably. He treated those around him as equals, even though he was well beyond them in scope of power and abilities. When dealing with others, he conducted himself as a scholar and a gentleman... an evil one, yes, but a scholar and a gentleman nevertheless. Look at his fight with Mindmistress, he could have savagely attacked her from the shadows before she ever had an idea he was coming.
Did he? No. He introduced himself, bowed to her in respect, and gave her time to prepare for what was coming. And later, after he had healed up via Mindmistress's machine, he could have attacked her while she was still as Lorelei. The Editor knows how she transforms... he could have easily attacked her, kept her from activating the locket, and slaughtered her.
What did he do? He simply asked the guard at her apartment complex to tell Lorelei that the Editor thanks her for her hospitality, but that he simply must be going. And then... he left.
So I'm not sure what backstories you were reading, but a lack of morals and honor is NOT an accurate description of this group. Part of what made them effective is that they trusted each other, they worked exceedingly well together, and had the backing of each other in every facet of the war.