When characters have increased weight as a power, the standard adjustment appears to be Weight x 3.

Some examples:

Crusader Citadel: Bull has Body Power: Weight x 3.
His adjusted weight is 540 lbs. His original score would have been 180 lbs.

Sensei: Ghengis Chi has Body Power: Weight x 3.
His adjusted weight is 420 lbs. His original score would have been 140 lbs.



When characters begin at at lighter weights, the modification increases to Weight x 4.

Examples.
Revised Rulebook: Mammoth has Body Power: Weight x 4.
His adjusted weight is 400 lbs. His original score would have been 100 lbs.

Organized Crimes: Fat Lady at the Circus has Body Power: Weight x 4.
Her adjusted weight is 400 lbs. Her original score would have been 100 lbs.



Lower modifications take place when weight is increased along with other bonus abilities.

Great Iridium Con: Kahless Khan has Mutant Power: duplicated cardiovascular system
A. Weight x 1.5
B. Heightened Endurance A: + 16

From the Deeps of Space: Capellans have Alien Body:
A. Heightened Endurance: +10
B. Lowered Strength: -5
C. Natural Weaponry: +2 to hit, +4 damage
D. Increased Mass: Two times average human mass.