Rogue Modron (Race)

Can exceed the level limits for the allowable classes if they have high prime requisite scores (DMG Table 8).
Special Advantages:
* They can readjust their vision, giving them effectively a double normal range of sight, as well as an uncanny ability to detect secret doors and other minutiae.
* They have a 2 in 6 chance of finding secret doors and a 3 in 6 chance of detecting concealed doors.
* Modrons have a 30% resistance to illusions, energy drains, charm, sleep, fear, domination, and other similar mind-affecting spells.
* They gain a +1 bonus to saving throws versus fire, cold, and acid.
* Modrons have a natural Armor Class of 8 (due to the fact that they're partially constructed of metal), and a movement rate of 15.
Special Disadvantages:
* When modrons are surprised, they remain that way for twice the normal length of time.
* Suffer a -1 reaction penalty with individuals of chaotic alignment
* It is impossible for them to carry out such standard actions as riding a horse, wearing normal armor, or wriggling through a narrow opening.
Initiative Rolls (Optional Rule)
* Always acting and responding in the same way, a modron rolls initiative once. Just once. This is done when the character is created, and the same number is used throughout the life of the character.
** Modifiers to the roll are still added, but the roll itself remains static.
Preset Action (Optional Rule)
* This option requires a rogue modron to state one preset action per level, based on external stimuli a condition upon which the modron will always respond the same.
** For example. every time a foe draws a weapon, a certain modron might immediately attack. On the same condition another modron might cast the highest-level spell it currently has memorized, whether the spell is appropriate for the situation or not.
* The conditions must be common enough to occur at least once in an average playing session.
* While the disadvantages to this option are obvious (always having to react a certain way), the modron's response is immediate.
* Initiative is automatic. In fact, the modron initiates the action even if the preset condition occurs in a round in which the modron has already acted.