Cheiromancer
Adventurer
I find myself agreeing with werk and Hypersmurf.
With regard to Combat reflexes and AoOs: Images are not creatures. So it is the mage with Mirror Image that provokes the attack of opportunity, and this AoO has the normal chance of hitting an image rather than the mage.
With regard to Magic Missile: Images are not creatures. If a mirror image is targeted, the missile fizzles. If it hits the caster, then all the images appear to have been hit, and they move around so that the identity of the caster is concealed.
As Hypersmurf notes, this answer contradicts the FAQ, which seems inclined to treat the figments as creatures.
With regard to Combat reflexes and AoOs: Images are not creatures. So it is the mage with Mirror Image that provokes the attack of opportunity, and this AoO has the normal chance of hitting an image rather than the mage.
With regard to Magic Missile: Images are not creatures. If a mirror image is targeted, the missile fizzles. If it hits the caster, then all the images appear to have been hit, and they move around so that the identity of the caster is concealed.
As Hypersmurf notes, this answer contradicts the FAQ, which seems inclined to treat the figments as creatures.