Kweezil
Caffeinated Reprobate
Something a friend and I came up with. It was late and there was very little blood in my caffeine stream. 
Any thoughts or criticisms?
The Dark Overlord
A PrC for evil overlords with hordes of fanatically loyal but expendible minions.
Prereqs:
Alignment: any evil
Diplomacy 10+
Intimidate 15+
Leadership
Skill Focus (Intimidate)
BAB +8
Must have a permanent base of operations
BAB Fort Ref Will Special
+0 +0 +0 +2 Fearsome Reputation, Tyranny
+1 +0 +0 +3 Frightful Presence
+2 +1 +1 +3 Rule Through Fear
+3 +1 +1 +4 Dark Master
+3 +1 +1 +4 Overlord
HD: d6
Skill points 4 + Int modifier/level
Skills: Bluff, Diplomacy, Gather Information, Intimidate, Knowledge, Listen, Search, Sense Motive, Spot
Fearsome Reputation
+1/class level bonus to Intimidate checks.
Tyranny
+1/class level to Leadership score. All Negative modifiers to Leadership score due to Cruelty etc. are cancelled.
Frightful Presence
As Feat of the same name.
[Once per round, you can, as a free action, use your frightful presence. All opponents within 30 feet who have fewer Hit Dice than you must make a Will saving throw (DC =10 plus your Hit Dice plus your Charisma modifier). An opponent who fails this save is shaken, suffering a -2 penalty to attack rolls, saves and skill checks for 1d6 plus your Charisma modifier rounds.
A successful save indicates that the opponent is immune to your Frightful Presence for one day. This ability cannot affect creatures with an Intelligence of 3 or less.]
Rule Through Fear
The Dark Overlord's mere name is a cause of fear and triggers effects identical to Frightful Presence.
Dark Master
Gains the Leadership feat for free, effectively doubling Cohorts and Followers.
Overlord
Followers and Cohorts within 30ft will fight without morale checks etc. and can fight even at negative hps until slain (-10 hp).

Any thoughts or criticisms?
The Dark Overlord
A PrC for evil overlords with hordes of fanatically loyal but expendible minions.
Prereqs:
Alignment: any evil
Diplomacy 10+
Intimidate 15+
Leadership
Skill Focus (Intimidate)
BAB +8
Must have a permanent base of operations
BAB Fort Ref Will Special
+0 +0 +0 +2 Fearsome Reputation, Tyranny
+1 +0 +0 +3 Frightful Presence
+2 +1 +1 +3 Rule Through Fear
+3 +1 +1 +4 Dark Master
+3 +1 +1 +4 Overlord
HD: d6
Skill points 4 + Int modifier/level
Skills: Bluff, Diplomacy, Gather Information, Intimidate, Knowledge, Listen, Search, Sense Motive, Spot
Fearsome Reputation
+1/class level bonus to Intimidate checks.
Tyranny
+1/class level to Leadership score. All Negative modifiers to Leadership score due to Cruelty etc. are cancelled.
Frightful Presence
As Feat of the same name.
[Once per round, you can, as a free action, use your frightful presence. All opponents within 30 feet who have fewer Hit Dice than you must make a Will saving throw (DC =10 plus your Hit Dice plus your Charisma modifier). An opponent who fails this save is shaken, suffering a -2 penalty to attack rolls, saves and skill checks for 1d6 plus your Charisma modifier rounds.
A successful save indicates that the opponent is immune to your Frightful Presence for one day. This ability cannot affect creatures with an Intelligence of 3 or less.]
Rule Through Fear
The Dark Overlord's mere name is a cause of fear and triggers effects identical to Frightful Presence.
Dark Master
Gains the Leadership feat for free, effectively doubling Cohorts and Followers.
Overlord
Followers and Cohorts within 30ft will fight without morale checks etc. and can fight even at negative hps until slain (-10 hp).