As constructs, robots share the following traits that set them apart from organic beings:
Base Attack Bonus: 3/4 of total Hit Dice.
Good Saving Throws: None.
Starting Occupation: Robots never get
starting occupations.
Starting occupations represent life experiences gained before acquiring 1st level. Robots have no life experiences before rolling off the assembly line; before then, they were nothing but parts.
Weapon and Armor Proficiency: Robots are proficient with their
manipulators only. They are not proficient with
armor.
Ability Scores: Robots have no Constitution score and usually no Intelligence score. A robot's size and frame determines its
ability scores, as shown on Tables 10-1 to 10-5.
size, as shown on the tables below.
Manipulators: A robot typically has two functioning
manipulators, although Large or bigger robots can have a higher number of functioning
manipulators based on their size (see
Manipulators).
Immunities: As constructs, robots are immune to mind-influencing effects,
poison, sleep, paralysis, stunning,
disease, necromancy effects, and any effect that requires a Fortitude save unless the effect also works on objects or is harmless. They are not subject to
nonlethal damage, ability damage, ability drain, energy drain, or the effects of
massive damage.
Robots with armature, biomorph and liquid-state frames are not subject to
critical hits. Biodroids and bioreplicas, like the creatures they imitate, have vital areas and critical systems that can be attacked; consequently, they are susceptible to
critical hits.
Repairable: Robots cannot heal
damage on their own but can be repaired using the Repair
skill. A successful Repair check (DC 30) heals 1d10 points of
damage to a robot, and each check represents 1 hour of work.
Robot Resurrection: A robot reduced to 0
hit points is immediately destroyed and cannot be repaired, although its "brain" may be removed and installed in an similar but intact frame. See
Robot Resurrection for details.
Weight: A robot is generally heavier than an organic creature of similar size by 1.5.