Sovereign Seven
The Sovereign Seven were a group of aliens from various planets exiled to Earth, where they battled various villains, most notably Darkseid. The original group consisted of Cascade, Finale, Rampart, Reflex, Indigo, Network and Cruiser; later, Rampart was killed off and then replaced by the DC character Power Girl.
The main characters of Sovereign Seven were all gathered by Cascade as a mysterious force known as The Rapture destroyed their home worlds. Each of the Sovereigns were princes/princesses of their people.
For a time, the group operates out of a mysterious coffee house (the "Crossroads Coffee Bar") located where three Northeastern states meet, which is larger on the inside then it is on the outside. Many times portals open inside doorways, to areas unfamiliar or well known to the Sovereigns, who work as employees to earn their keep. The Coffee house is run by supporting characters Violet Smith and Pansy Jones.