Essentially, a piece of my concept of a Trailblazer for Star Rail. Obviously another SI variant, but- they're also just meant to be a nonbinary Trailblazer.
Their 'codename' is Chrome Void. Their vessel was initially meant to be the female variant, Stelle, but the data that was sent to Silver Wolf was corrupted (slightly) in the last second by the Aeon, Fuli. The memories of a human from many millenia ago- a random human who was long forgotten and erased from all but the mind of Fuli- were transmitted into the puppet-body. The data was insanely old, so it didn't translate the best- and its mere presence in the receptacle for the Stellaron resulted in physical changes to the Stelle Trailblazer body- causing Chrome Void's physical appearance, which is semi-reminiscent of how they appeared when they were alive, millennia ago.
Their body shrank, resulting in their initial clothing being-- baggy on their frame. Chrome has a number of 'blank spots' in their memory, and has a tendency to forget things easily- so once they're aboard the Express, they take to keeping notes on their device of things they don't want to forget.
Unlike Stelle and Caelus, Chrome's first path is not, in fact, Destruction- and their main element is not Physical, either. Their main path is the path of Abundance, and their main element is Imaginary.
They try not to think about the life they lived before waking up in Madam Herta's Space Station. Every time they do, they start having a panic attack.
Chrome- like the canon Trailblazer- doesn't remember Kafka or Silver Wolf. They have dreams sometimes, where they can hear a voice speaking to them- but those are intermixed with dreams of their life long-ago. It's very rare that they wake up without tears.