"What the heck?! These things sure don't fall easily!" Daranthos exclaims as his assailant presses its attack despite having an arm severed. He attempts to defend himself against his foe.

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Speaking of defending, does this enemy have Improved Grapple? Or can I nail it with an attack of opportunity for trying to be a zombie?

If so:
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(1d20+9)[15] (Attack Roll)
(1d20+9)[22] (Possible Crit)
(3d8)[17] + (1d6)[5] + 7 (Damage)


Also, last turn, was I close enough to use my maneuver, or did I have to charge?

Grapple Check: (1d20+12)[21]