I have an affinity for sharp things and thought this would be an interesting topic of discussion.
Mucking about on the site, I stumbled upon the Blondie page, a nobody character but with an interesting weapon. A twin bladed, single edged sword with a major curve that was described as resembling a khopesh. I can't agree with that description, a khopesh doesn't have the sickle like shape that both of his blades have. The khopesh is a sword of Egypt that was born of an axe, the blade extends straight before suddenly jutting out before hooking back in. While this sounds at first like a sickle, the difference is that the blade is on the outside of the curvature and nowhere else on the blade. This makes it more of a hacking weapon more adept to smashing through the enemy rather than to slice through them. The curve also serves as a means to draw away the opponents shield with the dull hook at the tip. This is very functional for Egyptian warfare because of the size of Egyptian shields. The heat of Egypt made armor impractical for all but the highest ranked officers, who would not engage in the majority of the battle, they made up or such
There is a sword that looks more like the one he wields, the shotel from ancient Ethiopia. A single edged sword with a curve that varies widely, it resembles and is akin to the middle eastern scimitars. Use wise, it's sickle shape made it very effective against unarmored enemies but it is fairly light, making it ineffective against most armors. Its point however is where it is most interesting. With a double edged tip, it is very good at piercing and brings to light the reason for the curve. Abyssinian shields were much smaller than Egypt's and the shotel looks to be adept at wrapping around them to hit vital targets. The only detail that Blondie's sword differs, other than the multiple blades, is the lack of a catch near the base of the sword.