3.7 had an extremely easy-to-miss bit during the Irontomb boss fight, and it feels a little ridiculous but I have to salute Hoyo for using everything at their disposal- including the places you would normally never think to look- because half of it was in the details screen for an enemy you couldn't even target in the background, and the other half was literally in the fucking pause menu.
But I really loved it, because! You can actually see what each individual Chrysos Heir contributed to that battle! It changes with every phase of the boss fight, so you can actually watch the progress of Irontomb's fall!
And that's already so so cool, but it's also really delightful how much thought Hoyo seems to have put into each of these, because I feel like each one really speaks to the actions of the character it represents.
Tribbie/Transfer Loop/Information Connection Timeout: Tribbie was the demigod of Passage, they transferred people place-to-place and kept the city-states connected and informed via the Century Gate.
Hysilens/Assertion Failed/Detection Unresponsive: Hysilens earned her path of Nihility; she was unable to assert herself and live on her own after the loss of her home, her family, her people. She was desperately clinging to Cerydra and her reign as a reason to live right up until the moment she killed her.
Cerydra/Illegal Protocol/Firewall Deactivated: Cerydra was the demigod of Law, and it was her death that changed the protocol of the Sceptor and allowed Herta and Screwllum back in, and to accomplish as much as they did.
Aglaea/Throttle Failed/Performance Overload: Aglaea pushed the limits of what a demigod could handle. She spent centuries enduring the gradual wear and tear of her very soul; even if Caenis hadn't killed her, she wouldn't have lived much longer. She was still trying to fulfill her duties, up until the very end.
Anaxa/Malicious Code Injected/System Out of Control: Anaxa's entire life's goal was to "sow the seeds of doubt." He lived to upend things and pulled zero punches doing it. I can't think of anything more fitting than him just straight up injecting malicious code into Irontomb, no notes 10/10
Cipher/Parameters Distorted/Logic Errors: Cipher was the demigod of Trickery and she used her talents well. She could trick people into seeing a completely different reality, and make their own sense of logic lie to them.
Mydei/Data Wipe/Copy Lost: Mydei was thorough in his eradication of the black tide, he worked endlessly to wipe out as much of it as he could. He was also insistent on doing it alone, even though Krateros and his people would have followed him anywhere.
Castorice/Subprocess Frozen/Unable to Terminate: Due to Polyxia's actions, the River of Souls was dammed, freezing that entire process and leaving people unable to fully cross into the sea of flowers. Castorice herself had the touch of death, but refused to use it, good or bad.
Hyacine/Stack Overflow/Insufficient RAM: Fat fu- Aquila was probably one of the most corrupted titans, due in part to the black tide, but also because of Seliose's hatred after merging with them. You can see it in the scrolls in Okhema and the Skydome after Hyacine usurps the Coreflame. And you see it's effect in 3.4- the corruption stacked and overflowed, until Hyacine couldn't bear it. When Phainon goes to kill her, she's already one foot in the grave. In following cycles, she holds out only until the last human being left on Amphoreus passes away, then loses her sanity and dies.
Dan Heng/Storage Anomaly/Unable to Delete: As the Imbibitor Lunae and a scion of the Permanence, Dan Heng carries the weight of 90+ reincarnations, including a lot of their memories, whether he wants to or not.
March 7th/Time Rollback/Infinite Loop: Even before becoming the demigod of Time, March 7th wanted so so badly to be able to look back in time and into her own past. And because of that loss of memory, she is desperate to infinitely preserve what she has now, to the point of taking selfies with everyone once a day.
Phainon/Merge-Split/Core Damaged: *gestures to 3.4* kind of what it says on the tin. Phainon exists as Phainon, as the Flame Reaver, as Khaslana. He took on so much that it damaged him right down to the core of his very being. The original body exists now only as a battered, broken corpse buried in the Ruins of Time.
Cyrene: "This is a story about love, and how to answer it."