Sea Urchin Zoid
EZ-U42 Zea Urchin
 Type: Sea Urchin
  Class: 1 (AZ)
  Length: 5.8m
  Height: 5.1m
  Weight: 31t
  Speed: 47kph
  Crew: 1 or 0

Equipment:
Stealth torpedo/mine discharger x10
AZ 20mm Laser cannon x2
Multi barrel impact unit
Telescoping grapplers x16
Multi wave antenna array

 

 
Information:
The Zea Urchin's primary mode of attack is to use stealth and slowly move into position. And from there wait for the enemy to move into range. It is capable of extreme depth due to is heavy armor. It can carry a CZ command pod, or multiple units can be remotely piloted from a single CZ. The CZ can also travel under it's own power. This Zoid is an excellent choice for underwater surveillance, demolitions, and deep sea salvage. Although a small Zoid, the Zea Urchin has strong armor, and is quite sturdy.
 

20mm AZ Laser Cannon

Infared image from the top, with weapons extended 
and launch tubes open.

Cose up of maintainace hatch, and Torpedo launc tubes.
ECZ-U40 Urchel
 Type: Sea Urchin
  Class: 0 (CZ) 
  Length: 2.2m 
  Height: 1.9m 
  Weight: 5t 
  Speed: 38kph 
  Crew: 1 

Equipment: 
Multi barrel impact unit 
Telescoping grapplers x2 
VLF Antenna Array

Information:

This pair of Zoids was developed by the Guylos Empire to disrupt enemy shipping lanes and to protect their own. Even when the enemy knows this Zoid to be in the area, it is difficult to detect and destroy. The CZ units normally operate from hidden command posts, or are dropped off into an area by air or sea transport, and then move into position. Once carefully positioned, the larger Zoid can be put in sleeper mode, and operate on it's own for years at a time, monitoring and relaying enemy traffic and movement information, or set to destroy enemy units, based on sophisticated identification routines.
 

Inspiration for my model

This is the toy I started with.

 
The main Zoid started out as a small Battle Bot toy. It came as a two pack. I'd picked it up for the other bot, but this one proved to be more inspireing. After removing the remote grip, I converted the spring mechanism from pull cord to a "rotate and release" mode. The entire center section can spin, leaving the bottom and top (CZ mount) stationary. I also converted the panels on the sides to be flip out weapon mounts.There are 124 spines mounted on the main Zoid and 16 on the CZ. The spines consist of several sizes of metal pins from various computer and automotive wiring connectors.

The CZ started out as a bubblegum machine canister. I cut the dome shorter and dyed it green. The duct fans are from a Rhimos escape pod and the seat is from a Maccurtis. 

I painted the models black, and dry brushed with several shade of purple.