@Tamerlane
I was going to try and dispute your claim, however after re-reading and analyzing her introduction. I have to agree that she may be more static than I give her credit for, such as the way she acts now is implied to be that way from the start (Page 15, Kuromu's off hand remark "This is why we can't co-act" implies she had been this way since at least when Gyari is in the same group as Kuromu). Her background is still open for explanation as to why she is this way, however any moment where she is a better person than she is now is only available in her childhood (as part of her backstory) or after the arc through her redemption (If the author chooses to go that way).
It's worth noting that I find her attitude (aside from selfish and egotistical) to be also childish. As in she's not aware of other people's feelings or emotions. She has never returned any confession of love from her "harem" aside from head pats and arms around her hips (her reaction to Merun is indifferent with her only comment about her is "I picked her up"). Meanwhile she openly and frankly expressed her admiration for kuromu (granted Im not sure if it's genuine) and asked for kuromu's hand in marriage, multiple times. She doesn't seem to be aware that Kuromu's dream of becoming an Evildol and thinks she's better off being Gyari's lover. And she openly declares her ire and jealousy towards Iruma culminating in her calling him ugly.
Now thing is she noticed Lied wanting her autograph (and Lied does want her attention) and freely gave him that without any strings attached, no demands for him to leave Kuromu's group, nothing. She gave him what he wanted and thats it. This could mean that my previous paragraph is wrong and I'm stupid, or that she was unaware that Lied was also a part of Kuromu's group (which adds more to the previous paragraph).
In conclusion, I think that Gyari is more static than I thought. But I think there's still room for her to be redeemed by the end of the arc. Granted the Author could pull a Kirio on us and have her remain as a selfish, egotistical, womanizing(?) bitch.
Given how we've had a fake-out redemption arc with one of her implied allies in Ami Kirio
Wait did she get in contact with Kirio or the six fingers? Did I miss a detail?
Plus I think Kerori is gonna turn out to be a massive tsundere for Iruma based on how things are looking
As much as I want to disagree, I have to admit that her expression remained stone-faced towards Gyari while she expressed more emotion when she looked at Iruma and when she shook him off. I guess because I don't see this manga as having harem elements I don't consider Kerori having deeper romantic interest with Iruma.