http://wiki.spiralknights.com/Mecha_turret
Someone might find this information usefull-steam account and wiki don't work well:
Deconstruction zone has a mecha turret thats purple (jelly farm one is red). It still cost 5ce.
Turrets can be attacked and be affected by status see screenshot it's stunned
http://steamcommunity.com/id/juances/screenshot/632981209487819803
Edit: e also need to update the mecha turret entry at http://wiki.spiralknights.com/Exploration
I have added what you've requested if you would like to look at it! I'm glad to help, and I'm happy you noticed such key details! To be honest, I didn't even know those were still in game! :D
I hope to see you contribute to the wiki more often!