Editing Assassin (section)

===The other guy===
The entire concept of the Assassins evolved from a single entry in the original Second Edition ''Imperial Army'' army list for an Imperial Assassin, who could take any combination of wargear and a special card (not even exclusive to him at first), ''Polymorphine'', which allowed him (or anyone else with a free Wargear slot) to disguise himself as another model. This duly proved completely broken since there was no specific rule to say a Gretchin couldn't be an Imperial Assassin (or other ultra-killy character) wearing Terminator Armour and riding a bike, and abuses of the Polymorphine Wargear card (especially those involving [[Warp Weapons|Vortex Grenades]]) seem to have been a large part of the reason why the later version of it made it exclusive to the far more limited Callidus Assassin. She had fixed wargear, so no more [[FATAL|terminator/biker popping out of a Guardsman]] or [[anal circumference|surprise Vortex Grenade right where it hurted the most]].

TL;DR: They evolved from cheating.

The Horus Heresy reboot recently revealed the existence of the ''Clade Adamus'', supposedly one of the oldest Clade in the Imperium even during the Heresy War. While there's little idea over what this guy's deal is aside from the fact that he's wielding a ''Nemesis Blade'', his super-basic appearance caught the eye of a few ancient neckbeards - Those who looked far enough found that the Adamus Assassin looked more than a little similar to this original Imperial Assassin from back in the days of [[Rogue Trader (Sourcebook)|Rogue Trader]]. While there were expectations about this being the return of the bullshit OP build-your-own assassin, it turned out that the Adamus assassin is merely a more basic type of killer, specially made for challenges. Fortunately, they not only get the ability to copy the Weapon Skill and Initiative of the enemy they challenged, but they also have a single Decapitation Strike, an instant-kill attack to spell the end of Praetors.