Panel 3: Meet policeman Scott Scaltar, who moonlights as the swashbuckling superhero Mister Mid-Nite (in the MISTER MID-NITE series by Bob Elinskas).
Panel 6: Here's Samantha's mom, Dr. Jessica "Doc" Saphire (or the back of her head, at least). She's a native of the planet Sandaria, endowed with superhuman strength and resilience, as seen in Paul Quinn's CREW OF THE WANDERLUST.
Panel 8: The return of Repo-Beast, gatherer of souls, who fought Lady Spectra & Sparky in one of their earliest adventures
Panel 9: And our own Lady Spectra makes the scene.