Interesting, not sure what the lo po bia family did to Yama and his brother but they seem unique or maybe early test version of what lo po bia animas mixed into humans.
Baam might have a more powerful axis in him or part of him then the person that created the towers, keep in mind SIU earlier work had many towers, the towers itself was the embodiment of power being given to the one that gets to the exit.
Is the elder part guide or is it part of his special powers, he couldn't see the future when Bam was near, from what SIU said the tower of god story is already written and future is preset but Bam being in the tower is changing everything.
Always viewed the power inside as some sort of parasite, kinda like the parasites in stargate, you can clearly tell Zahard back before he left the hell train was a completely different person, he believes himself to be more then human.