User blog comment:Madax the Shadow/Analysis of the Chozo Memories/@comment-128.235.8.208-20170923223144

I think it's important to note that in memory 10 the commanding Chozo is holding his right arm behind his back. Since in memory 11 his right arm features an arm cannon, I think the implication with this is that he had planned to betray the survivors since before he even landed.