Aron
HP: 35/49
Aron carefully considers his next move. Then he decides to land hard, going down on one knee, his weapon hand knuckles to the ground. Then he slowly raises his head to make eye contact with the lesser devils, and with deliberate slowness, gets up and braces the shaft of his weapon against the shield, pointing the edge at them.

Meanwhile, among the human pursuers, a wet plop announces the arrival of another Dretch, immediately followed by a wet, rasping noise and a huge, noxious green cloud.

Aron lands to guard the allies at the gate, and (standard action) summons another Dretch to deal with the human pursuers via Stinking Cloud.

Spoiler: Do these devils WANT SOME OF THIS?!?
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Aron can make up to 7 attacks of opportunity with his 10' reach. Against Lawful Outsiders, he is at +20 (15 base, +1 AoO from Temple Guard, +2 from Arcane Pool enhancement, +2 from Bane), 1d10+15+2d6, 17-20/*2. Between base enhancement, Arcane Pool and Bane, the weapon's effective enhancement bonus is +5, enough to penetrate alignment-based DR, but I don't know if temporary enhancement actually works for that.