after my pet peeve image with Raph and the Sai, I did the rest of the Turtles, here's all four collected without the pet peeve text.
My pet peeves are of course:
Sai are not knives or daggers, its a truncheon weapon for striking and trapping.
A Daisho is a short sword and a long sword combo, ie a Katana and a Wakizashi. There is no such thing as "twin Katana" or dual wielding 2 katana swords. And straight bladed "Ninjato" are completely false weapons fabricated in the 1960's.
A Bo don't break easily, it's meant to crush bones and ruin swords.
The Nuchaku are primarily a flail used as a grapple implement, dual wielding kinda hinder a lot of it's uses, limits it's attacks and most TV depictions of the 'Chucks are Freestyle. Completely harmless in actual combat and is just flashy, even Bruce Lee's movies are Freestyle. The Nunchaku is actually a really terrible weapon, hence why it doesn't have any traditional Okinawan Katas.