Thanks.

I have more of an issue with the placeholder for character names than titles, to be honest. Though I've been doing okay with changing minor character names during rewrites since I don't want to use the same ones too often in different books/series.

For the same I gave, I ended up changing "Hero" to "Standing Ground" because the title of Hero can feel a little generic and has to compete with other novels out there with that title. While there is some heroics since the story involves genetic mutations like X-men, I'm happier with the adjusted title.

Domino would make sense as a story title considering how a plot can unfold.