Armor Class: 4 
Hit Dice: 1+4
"The secret of immortality is carved in its carapace,
in runes only the dead can decipher."
Serving as a living phylactery for the Lich-Kings of the
Dreamland, Lungthief Beetles are rat-sized insects that
search the battlefields for corpses. Relatively weak, they
defend themselves with a painful bite that deals 1d2 damage.
Upon finding a suitable corpse, the Lungthief Beetle burrows
into the chest and animates the corpse, allowing the Lich to
claim a new body (hence the name). Due to the malevolent force
of the soul held within their carapace, any time the Lungthief
Beetle fumbles, scores a critical hit, or a critical hit is scored against
it, the beetle explodes, shards of its shell doing 1d4 damage to 1d3
creatures in a 10' area, determined randomly.
((Image courtesy of Ridureyu1))