The thing that made katanas so ridiculous is their ability to cut better, faster. A straight sword is going to be duller, heavier and slower. Katana cut people in half, swords make people bleed to death.
A broadsword or battle axe can cleave a person in half as well, albeit it does require more strength to wield. And a dagger can cut faster and better than a sword as well. One timely, accurate thrust and it's just as deadly as any other weapon. So shall I rule out daggers too since like the katana they cut faster, better?
And the name is a play on vicious, yes. Never seen Cowboy Bebop.
So how shall I rewrite my character to fit in a world that's advanced enough to perform advanced genetic DNA cross species splicing, but apparently still too unadvanced to have martial weaponry? Or is it simply that you don't think such weaponry would be allowed in a gladiator style arena? I am very upset you would take jibes at characters who were approved by the GM. If they did not fit within LadyNitrate's requirements then I am sure she would inform me so I could make the required adjustments.
I understand OCD and I'm sorry my character has you in a tizzy. Right now I'm going to remove her from play rather than upset more people.