+1 to ROS Jagged Turtle

* Starts with a 'j'
* Is a turtle
* Easily spelled when said to someone ( -1 @ Jalisco, Judithemys )
* Doesn't sound affiliated with a particular country or people (could get
confusing) ( -1 @ Jamaican, Japanese )
* Isn't trademarked / cliche ( -1 @ Jedi )
* Looks cool!