It's possible Ekko is the Spy for Etherium Trolls as well, in which case it would be GB/Flower/Prof which would be hilarious.It's probably Prof/Flower/Ekko - ???
Ratchet/Ichigo/Melkor - ???
GB/RAtunes/Aurelian - Etherium Trolls
Failing that, It would be Ratchet/Melkor/GB. At which point, it could be Ekko/RAtunes/Aurelian who need to know Flower's faction. They could be about to win with Flower going over actually.