vigilantly party

what would happen if a family of vigilantes invite every pro hero to a party? what would happen if some of the pro hero's where siblings with the vigilantes and help out with the vigilantly work? what would happen if some villains crash the party? would the party be rad? would the party go down in flames? would the party be crashed by heros to arrest the vigilantes?

*mixed in different animes and threw in some oc's as well!*