Cleon
Legend
I'm a bit divided on this myself, though my gut instinct is that these should be pretty unique and therefore monsters. However, let's see what Shade thinks also.
Been trying to come up with a a nice name for its "release ooze" ability and the best I've come up with so far is "Oozing Demise", may I suggest:
Oozing Demise (Ex)
When a grayman is destroyed, the gray ooze trapped within its body is freed to attack as a full-strength creature, taking one round to crawl from the hole in the greyman's back.
When a grayman is destroyed, the gray ooze trapped within its body is freed to attack as a full-strength creature, taking one round to crawl from the hole in the greyman's back.