It really depends on what you mean by selfish, I guess—

Selfish in a jealous way? Lensless, Mohawk, and Fullmask fight for that spot.

Lensless just wants all Kent’s attention. Mohawk is possessive in a way, like he wants to be the only one to be able to do things with Kent. And Fullmask? Well before his Kent’s death he was much healthier, but afterward he’s so incredibly selfish in the fact he wants her with him at all times.

Selfish in a way that he sees her like an item he owns? Corrupted Mark and Viltrumite Mark.

Corrupted Mark wants to (and really is) the only one to interact with Kent after her capture, he wants to be everything she wants or needs. And he’ll make sure of it. Viltrumite is sort of in the same boat. He wanted his future that he imagined with Kent, and didn’t really ever learn to take her wants/needs into consideration.

I don’t believe it’s been asked but also don’t worry about asking repeat questions. With how big the sts mark/superwoman variant tags have gotten, I really don’t mind getting the same question more than once! Also, welcome back! :)

But there aren’t many Mark variants that are able to or are willing to keep their Kent’s as a pet.

The only one that does is Corrupted Mark who uses golden Kryptonite to completely/permanently rob Kent of her powers.

And for Stockholm Syndrome…. His Kent wouldn’t grow to love him nor the situation she’s in. He’s irreversibly damaged her body, after all. But she certainly grows to understand her Mark and not despise him as much as she did.