Adapting the classic 1967 Hanna-Barbera series The Herculoids into the Sword of Cepheus (2nd Edition) system requires a blend of high-fantasy tropes and "lost world" science fiction. This blog entry picks right up from Thundarr the Barbarian & Crew NPC Adapted To Sword of Cepheus 2nd Edition Rpg
In this setting, the Herculoids function as powerful, sentient "Monstrous Allies" or NPCs that protect a primitive yet technologically significant world
The Core Team: Stats and Traits
In Sword of Cepheus, most Herculoids would be classified as Large or Huge Creatures. They possess high Stamina and unique Traits to reflect their specialized abilities.
1. Zok (Space Dragon)
Zok is the heavy hitter, capable of both aerial combat and long-range energy attacks.
Attributes: STR 15 (+2), DEX 9 (+1), END 14 (+2)
Traits:
Flight: Moves at triple speed in the air.
Energy Beams: Ranged attack (60m). $3D6$ damage. Ignores 2 points of Armor.
Tail Swipe: Melee. $2D6+3$ damage.
2. Igoo (Rock Ape)
Igoo is the ultimate "tank," boasting near-invulnerability and massive physical power.
Attributes: STR 18 (+3), DEX 6 (+0), END 18 (+3)
Traits:
Stone Skin: Natural Armor 8.
Immunity: Immune to fire and standard poison.
Mighty Leap: Can jump up to 15 meters to close distance.
3. Tundro (Tremopile)
Tundro acts as the artillery, using a multi-legged chassis for stability.
Attributes: STR 16 (+2), DEX 7 (+0), END 15 (+2)
Traits:
Energy Rocks: Tundro fires explosive projectiles. Area Effect (3m). $3D6$ damage.
Extending Legs: Can increase height to see over obstacles or reach high ledges.
Armored Carapace: Natural Armor 6.
4. Gloop & Gleep (Protoplasmic Protectors)
These are versatile shape-shifters used for crowd control or defense.
Attributes: STR 8 (+0), DEX 14 (+2), END 12 (+1)
Traits:
Amorphous: Can squeeze through any gap and are immune to piercing/slashing damage.
Elasticity: Can stretch to form shields or "slingshots" for allies.
Adhesion: Can trap enemies. Requires an Average (8+) STR Check to break free.
Integration into Sword of Cepheus
To use these characters in your campaign, consider these rules adjustments:
The "Herculoid Bond" (New Career/Feat)
In Sword of Cepheus, a character (like Zandor) might possess a unique Social/Animal Handling specialization that allows them to coordinate these creatures.
Coordinated Attack: If the leader succeeds on a Leadership Check (Difficulty 8+), two Herculoids can combine their actions into a single devastating strike.
Technology Level (TL) Gap
The Herculoids often fight high-tech invaders (TL 12+) using primitive weapons (TL 0–1).
Zandor’s Slingshot: Treat this as a specialized weapon. It fires "Energy Stones" provided by Tundro.
Damage: $2D6$.
Special: Counts as a Magic Weapon for the purpose of overcoming resistances.
Campaign Seed: The Shield of Quasar
A group of Sorcerer-Kings from a neighboring continent has discovered that the Herculoids’ home planet/valley contains Star-Metal. They arrive with skyship armadas and clockwork golems.
The players must choose:
Act as Diplomats to bridge the gap between the primitive defenders and the invaders.
Act as Guerrilla Fighters alongside Igoo and Zok to repel the mechanical threat.
Note: Because Sword of Cepheus is lethal, Igoo’s Armor 8 makes him almost untouchable by standard swords, requiring players to use environment traps or high-level sorcery to engage him.

