Giant Isopod

The Rootwell is home to several large arthropods.  The giant isopods of Mangal are massive, armored creatures.  They reach lengths of up to 10 feet and feed primarily on decaying plant material.  They pose very little direct threat to other creatures.  When cornered, they roll into even more heavily armored balls and hope the threat looses interest.
Bindlewise Goblins occasionally make use of Giant Isopods as draft animals.  They mostly are kept in the Rootwell, as they prefer to avoid bright light.

Giant Isopod CR: 1/4

Large beast, unaligned

Armor Class: 18 (Natural Armor) / 22 (with Tuck)

Hit Points: 19 (3d10+3) 3d10+10

Speed: 30 ft , climb: 30 ft

STR

18 +4

DEX

12 +1

CON

13 +1

INT

2 -4

WIS

12 +1

CHA

7 -2

Senses: Blindsight 30 ft, Passive Perception 11

Challenge Rating: 1/4

Mostly Harmless. Despite its size, the giant isopod cannot effectively attack humanoids under most circumstances.

Actions

Tuck. The giant isopod can use its action to curl into a ball, increasing its Armor Class by 4. It cannot attack while tucked.
Bite. Melee Weapon Attack: +0 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) piercing damage. The giant isopod can only bite targets that are incapacitated, prone, or unconscious.