I remember the first time I saw that bat dude on the right - immediately decided he lived somewhere in the Klarkash Mts.
Thundarr was my introduction to the post-apocalyptic world concept - still love it.
Just for fun, some OMAC stats for Mystery Men! using 10 dice for ability scores and 25,000 XP for powers.
4th level adventurer
Str 8/+2, Dex 7/+2, Con 8/+2, Int 3/+0, Wis 7/+2, Cha 2/+0
HP 32, DC 16, Move 100, Save 13, XP 3200
Limited - Super Constitution (12/+3), Super Dexterity (11/+3), Super Strength (12/+3)
Single-Use - Armor, Correspond (Brother Eye), Energy Bolt, Endure Elements, Fly, Haste, Heroism I, Jump, Regenerate, Stoneskin