MK ninjas are not you average stealthy, hide in the trees and wear all black/dark blue type of ninjas. That's for sure. They're more like "LOOK AT US! WE'RE FRIGGIN BUFFFF!!!! You wanna come get me? Come at me, I'm not hidin'. I'm wearing f*ing yellow! Doesn't matter if you can see me. I'll teleport/burn/freeze/lightning your ass!"