From left to right (Conrad Forsythe, Eitana Velocico, Priscilla Sauveterre, Rhys Jin, Quentin Pryce, Harmonia Sinclair, and Augustus "Gus" Renoire).
They come from one my stories *Parallels* and all seven of them are the main characters, hence the "Parallels Gang". (I don't have an official name for their group yet, so I'm sticking with it for now.)
I don't want to share too much of the story, but it takes place in a parallel universe in the distant future. The airship on the left is Priscilla's and is named the Barracupid. It's the main mode of travel the gang use to get around. The city in the background is a floating city called Collisia, which resembles a familiar city.