I always thought that Black Convoy/Scourge had a very unique spin on the Nemesis Prime iterations throughout the years that isn't just a blatant black redeco of Optimus Prime, and is the first thing that comes to mind when I think of Nemesis Prime.
Made in the span of over 2 days, with a similar work approach to my Star Saber and Deathsaurus models to reuse the robot mode parts eventually to make his truck mode, I'm rather surprised how well he turned out.