http://fc00.deviantart.net/fs71/i/2014/093/a/1/spiral_knights_machete_sw...

machete
a big knife for big knights. it performs exceptionally well when it comes to slicing things to bits.

slayer
an upgraded machete that makes it way too easy to slice through every single thing in front of you. treasure boxes, rocks, minerals, monsters, and even other knights will beg for mercy before this beast.

frost's bite
a cold and unforgiving knife that seemingly devours the souls of all that it cuts through. the ice that the blade is made out of is too cool to melt.

charred blade
this sword will grant you extreme destructive power at the expense of having to be careful in order to not get your hand burnt by the blazing pommel.

machete line swords have a 3-hit combo which is slightly slower than the regular 3-hit combo in exchange for more range
the charge attack is a powerful swing that makes a slash effect. it's like the brandish charge attack without the explosions, but the slash thing is larger and has way more range. the charge attack also knocks enemies back. for machete and slayer, the slash is yellow

machete > slayer > frost's bite
good chance of causing freeze on the charge attack. it is possible to inflict freeze with its normal attacks, but the chance of that happening is equal to the chance of triglav inflicting freeze with its normal attacks. the slash on the charge attack is made out of ice

machete > slayer > charred blade
charred blade is basically frost's bite but with the fire status. instead of dealing normal/piercing damage, it deals normal/shadow damage