In this episode the expanding 'Heroes' logo over the Earth as it rotates into the eclipse is replaced by an expanding 'Villains' logo.
When fire starter birth mother had a baby and they both "died in the fire" - then later Claire meets her birth mother = Claire told her mother her new and adopted name. In this episode Eric a Roberts character mutters Claire's name and birth mother recognizes it. Based on previous meeting mother episode Claire had a different name which was never specified.
Kristen Bell (Elle Bishop) and Blake Shields (Flint Gordon) previously worked together on a Veronica Mars (2004) episode, President Evil (2006).