Yess that is my 8! :^] She just goes by... well, Eight! and Parallel Canon is my ex-4, Zeph, tho more like fragmented versions of them.
Zeph works for Marina as head of Memverse security but due to working with early versions of the simulation, parts of their soul get extracted by Order, making those fragmented versions of them. Being my explanation for why there's a new 4 to fight every time lol.
As of Side Order Eight and Zeph have been dating for a couple yrs but goin thru a rough patch so uhhh some unresolved tension there ig! For the time being Eight went with OtH for their tour and to take some time away from Splatsville. OtH are like her family, particularly she thinks of Marina as her big sister. She'd introduced them both to Zeph a year prior, around the time Marina was starting development of the Memverse. Leading Marina to ask for their help in system security...
Eight was unaware of Zeph's involvement in the Memverse, since they were workin remotely for Marina even before Eight became aware of the project. Soo it was a big shock to see them in such a state!

There's more for me to ramble about but I'll stop there lol... but feel free to ask more specific questions :3