The Ranzz family consists of:
Mekt Ranzz - founder and member of the Legion of Super-Villains
Garth Ranzz - founder and member of the Legion of Super-Heroes
Ayla Ranzz - member of the Legion of Super-Heroes
Imra Ardeen - wife of Garth and founder and member of the Legion of Super-Heroes
Graym Ranzz - son of Garth and Imra
Garridan Ranzz aka Validus - son of Garth and Imra and member of the Fatal Five
Mekt, Garth and Imra were all born on Winath, where twins are the norm. Garth and Imra are twins, but Mekt had no twin, and this was considered a bad omen. Mekt has since come to believe that he does indeed have a twin and that his parents lied about him being born alone.
In the "Five Years Later Legion" continuity, it was revealed that Proty's life force has been living in Lightning Lad's body ever since he "sacrificed" himself to bring Garth back to life. This has since been ignored.