I was wondering if there are any Ninja transformers on cybertron, and what you thought of the Ninjas here on earth.
First off, 'DarkNinja'? Really? What kind of name is that? The kind that a 3-year old would attach to think it made them look cool. Apparently, using your real name, probably something like 'Louis' or 'Reginald' makes you look too sissy, so instead, you decided to make it all 'cool' with 'DarkNinja'. Here's a wake-up call 'Louis' - the name 'DarkNinja' makes you look STUPID, not COOL. Not that any name could possibly make you look cool.
Secondly, what is this? This is not 'Ask Bonecrusher About Cybertronian Culture', it's 'Ask Bonecrusher What He Hates'. What makes you think *I* know anything about Cybertronian Ninja's anyway? But since I don't have anything better to do, I'll answer your stupid question anyway.
Ok, so now that I've got that off my chest - I don't know if we have any Cybertronian Ninja's per-se (not that it matters, because Ninja's are overrated these days anyway), but I've heard Sixshot works as a Ninja Consultant. Otherwise, well, no. Cybertronians don't need to kype martial arts from you humans, we have our own. The higher ranking Autobots know Diffusion techniques (and let me tell you, those hurt), and we also have Crystalocution, Circuit-Su, and Metallikato. I tried Metallikato once, and just standing hurts more then those Diffusion techniques. I used to know a couple Crystalocution masters as well, and they were all Jerks who didn't know how to actually fight. Now me, I've master the art of 'Punch-You-In-The-Face-And-Beat-the-Living-Slag-Out-Of-You-Itsu'. I find it quite effective.
Oh yeah, there's also that Prowl guy for Animated, who pretends to be a Ninja, but he's not.