Consider this baby Open Game Content.
ZHARKS (GREEN MARTIANS)
|Illustration by J. Allen St. John|
Zharks arm themselves with swords, spears and radium guns. These guns are exceptionally long rifles that fire bullets with a core of radium. When the outer casing of the bullets cracks and the radium is exposed to sunlight, it explodes for an additional 1d6 points of damage. Some zharks carry smaller radium pistols. The zharks acquire their more high-tech weaponry from others, for they are only capable of crafting primitive weapons.
Zharks are usually mounted on eight-legged monsters called zhotes. Their arch enemies are the girallons.
BLOOD & TREASURE
Zhark, Large Monstrous Humanoid, Chaotic, Average Intelligence
HD 5; AC 14; Atk 4 weapon attacks; Move 40; Saves F 12, R 11, W 11; XP 250; Special: None.
SWORDS & WIZARDRY
Zhark: HD 5; AC 5 ; Atk 4 weapon attacks; Move 15; Save 12; CL/XP 5/240; Special: None.
Zhark: LVL 5; PH 7 (+2); MN 3; DC 15; SPD 2; XP 500; Atk 4 weapon attacks.
Zhark: HD 5; DEF 16; FIGHT 12 (1d10); SHOOT 9 (2d6); MOVE N; STR 7; DEX 4; MEN 5; KNO 3; DL 6; Special: Can make a total of four attacks each round.