GURPS - Compendium 1..

Stress Atavism
Variable
You temporarily "regress" if you are frightened, angered,
fatigued or injured. You must roll versus Will to avoid this. If
the Will roll is failed, you behave like an animal, acting on
impulse and instinct. If the Will roll is critically failed, the
attack is one severity level (see below) higher than usual.
Other effects: Stress atavism "spells" are very fatiguing.
Characters who have regressed suffer a point of Fatigue for
every minute of the attack.
Recovery: A character suffering from stress atavism usually
returns to normal a few minutes after the stressful situation
which caused the attack has passed. Make a Will roll every
minute to see if he recovers; allow a +2 bonus if he is comforted
by friends. If someone with the Empathy or Animal
Empathy advantage helps, allow a further +2 bonus!
Characters who pass out from fatigue or injury recover when
they wake up.
Cost: The point value of Stress Atavism depends on the frequency
of attacks, and how severe they are.
Severity of Attacks
Mild: When stress atavism strikes, the character has trouble
speaking. He must roll vs. IQ to utter a sentence. "Stressed
out" characters cannot operate complicated machinery, although
they may fire weapons, shooting wildly (-4 to hit). -12 points.
Moderate: The character suffers from the above problems,
but in addition has trouble understanding commands from others.
Roll vs. IQ after each sentence spoken to the victim to see he
understands the command. If he is attacked or challenged, he must
make a Will roll or act "on instinct." -16 points.
Severe: The character cannot talk or understand commands,
cannot use tools (except possibly as clubs), and automatically
acts on instinct. The character acts like his primitive ancestors! -
20 points.
Frequency of Attacks
Stress atavism may be set off by especially harrowing combat
situations, exposures to phobia objects, fatigue, despair, and failed
Fright Checks.
Common: If the character suffers from stress atavism in
almost any stressful situation, the disadvantage is worth the full
value noted above.
Uncommon: The value of the disadvantage is halved.
Characters get a +3 bonus on Will rolls to avoid the onset of
stress atavism.
Rare: The disadvantage is worth 1/4 normal value. Will rolls
to avoid the onset of attacks are made at +5.
Special Effects of Atavism
Sometimes atavism results in a particularly obnoxious behavior.
Pick a mental disadvantage, halve its value, round up, and add
the result to the above cost.
Subjugation
-20 points
This can only be taken as a racial disadvantage.
The race has been subjugated by a more powerful race. The
race has no rights and only those privileges which the overlords
choose to extend. It is possible for an individual member of the
race to escape to freedom, but that individual will be wanted in
the overlord race's territories. If caught in overlord territories, he
is subject to re-enslavement or sterner penalties. Any member of
the overlord race is considered an enemy, even outside of overlord
territories (an individual can also take the Enemy dis advantage
for the overlord race - this indicates that the overlords are
actively seeking that individual).
Note: A race with Slave Mentality cannot also take the
Subjugated disadvantage - races with Slave Mentalities serve
willingly.
Uncontrolled Change
Variable
This disadvantage also has appeared under the name
Unpredictable Change.
You have another form, built on its own character sheet as
for Transformation (p. 68). However, you have no control over
your change to this form! You are usually in your "normal"
form. Stress (physical danger, a failed Fright Check, etc.) will
cause you to change to the alternate form. You cannot change
back until, in the GM's opinion, the stress has been removed.
Value of this disadvantage depends on the general reaction
modifier of the form you change into. It is -10 points, plus -10
points for each -1 of general reaction penalty possessed by the
new form. Thus, if your transformed form is normal or goodlooking,
this is a -10 point disadvantage due to the inconvenience.
If the form is horrible enough to earn a -4 reaction,
Uncontrolled Change is worth 50 points!
If you are allowed a Will roll to attempt to control the
change, halve the value of the disadvantage.
Special Limitation: If your normal form is a metahuman one
and stress causes you to lose your powers, this disadvantage is
worth a flat -50 points regardless of reaction modifiers . . . but
your survival chances will be low!
105