Decided to make a Protogen a short while back and now I finally named him (Tranze, that is) and made him a simple reference sheet.
His main feature is a long flexible tail that have a port at the end, letting Tranze switch out and choose a tip that's best for the situation. They come in a large variety, from grabbers and tools to weapons meant in self-defense. The fluffy tip is the default one.
I don't feel like posting a lot of information right now, as I don't have much actually decided about Tranze, so if you want to know anything.. just ask, I guess.