I have to say I have a hard time believing Gatekeeper's reformation. He said he was sorry for killing Marcus, but as Advenureless_Hero pointed out, he did more than just kill him:
Quote Originally Posted by Adventureless_Hero View Post
I recall him saying that he'd enjoy making it look like Marcus had been attacked by biters. It's one thing to plan a coup to overthrow a dictator, but it's another thing to enjoy mutilating their corpse
Let's also remember, that the Gatekeeper was staging the coup for his own ambitious purposes. Marcus stood between him and power and that's why he was eliminated. The Gatekeeper had no problem with how the Colony was being run, except that he wanted to be the one running it. He had no plans to reform their policies or ensure fair treatment of the slave-like workers. In fact his closest ally freely tazed those same workers.

He then had to be reminded that he killed Sean, before apologizing. Sean was definitely not a dictator, but actually lived among the residents and improved their quality of life. Sean's crime: he took a postition that the Gatekeeper thought should be his.

He didn't apologize about planning to kill Michael once he was through with Marcus. And why? Because Michael stepped on his toes and got in the way of his rise to power. Sure he hit Bixby with a shovel, but that was in defense of someone being tazed.

I think Victor should have kept reminding him of things he should be apologizing for.

"Oh, you did me a favor in telling the Colony that I was dead so they wouldn't keep looking for me? Wasn't that only after you failed to have them actually kill me?"

Victor said the Gatekeeper had some seriously sick stuff going on upstairs (in his head). Remember that dad who showed up with his kids? He had them shot, along with the recon team that brought them in.

Now that he has met his match with Scratch, my opinion of him has not changed. In short I agree with Tales from Valhalla:
Quote Originally Posted by Tales from Valhalla View Post
Just because he has his tail between his legs doesn't mean he's a changed man. He had power, he was happy, people were not killed... Until this point I've seen nothing but Gatekeeper acting like a psycho nutfreak.
And I would think Victor (of all people) would be wary of this as well.