Gatekeeper Droid 6 

Rarity: Common
Base: Medium
Gender: It

Special Abilities

• Droid (Immune to critical hits; not subject to commander effects)
• Emplacement (Cannot move or be moved. Set up anywhere on your half of the battle map.)
• Manual Override (At the end of its turn, this character can designate 1 adjacent door as open or closed; it remains open or closed until the end of this character's next turn, or until it is defeated)
• Retractable Form (Usable when this character would take damage while unactivated: this character is considered activated and takes no damage this turn)
• Synergy +2 (+2 Defense while an ally whose name contains Gha Nachkt, Grievous, or Jabba is within 6 squares)

The TT-8L/Y7 gatekeeper droid was in use throughout the galaxy.