If you haven't heard of Loadblower, its because for millions of years he has done his job THAT damn well.
Only a hand full of top ranking Decepticons know of his existence, and fewer know what he really looks like.
Prepare to have your mind... Blown.
The Load Blower has gone by many names as the most top secret Decepticon undercover operative. He has never been caught, nor failed a mission.
His perfected strategy is the same every time, yet he always fools his victims. Wear various disguise parts, change color scheme, create new personality, become a trusted member of the Autobots even if it takes years to do so, close in on high value target(s), and then destroy.
Loadblower's name comes from his means of disposing of targets. His large jetpack is also actually two huge hidden missile launchers with 2 ultra high yield homing projectiles. What type of missiles he brings depends on the job and targets, but once fired, that's it for primary weapon ammo. With his payload blown, Loadblower's incredibly fast car alt mode comes into play, getting him out of even the stickiest of situations while his helmet and any other disguise armor parts are left behind as bombs, often strategically placed before his big boom exit. (Throws helmet at shocked Autobots and it says "Get ready for a surprise!")
Once ole Loady blows out of whatever Autobot structure he might be in when he ditches legend, he transforms to his Decepticon jet mode and vanishes, usually for years at a time.
(for those out there who are bothered by a little silly humor, call him Coverfire or Legend.)