Am i going crazy or are the stats for chaos spawn not given anywhere? I see a dozen references to the character being considered dead if turned into a spawn but nowhere where one is actually stat-ed.

Check tome of decay.

Page 120, thank you.

Most of the time the kind of Spawn a character turns into isn't considered the semi-stable combat monster, but more the "I Have No Mouth And I Must Scream" kind, which is likely why it wasn't mentioned until Tome of Decay.

My idea is to have an npc turn into a spawn while fighting the characters. muhahahaha!