All I know is, were short, gender less, have 4 fingers, ans have a black face with glowing eyes with no mouth or ears..............O.O..................dont that wierd u out, I know its just a game and stuff, even if it is, this is one of the great questions of what we are in the game. 1st thing.....how do we breath with no nose, and even if were like frogs that breath through skin, dont the armor cover all our breathing space, and I know the number of knights is constant due to endless knights falling from the sky, but what about on our home planet? how do we reproduce? For pete sake were gender less, are we robots created by a massive machine oooooooooooooooo!!! nah......and our body, is it all black, or dark shade of our personal colour. Pluss the dirty part is...........................................we never take showers.....................
Spiral Knights Biology
I've always thought that we're humans, and it can be easily explained in a few different ways. The armor covers our entire body, so the eyes that you see are just basically cameras on the outside of the helmet so that we can see (although this the part about the eyes is unsupported). Another side tangent is that we are evolved humans (this theory is more in line with the wiki).
Take this for example:
"Clothing worn by pistol-packing warriors from a forgotten time. They smell of rawhide, gun smoke and action."
What does it sound like to you. Cowboys? Well, it would make sense if we were from earth a long time ago and we used up all the energy at our core... and went in search of a new planet.
Lets say the armor has its own air filtration system, and thats why poison only affects us for so long. And better poison res is just better armor filtration.
Well, we aren't genderless, and as to how we reproduce, I don't feel explaining this would be conducive to a good community enviroment.
As to endless Knight falling from the sky, what if earth's core failed from sucking too much energy out of it and they evacuated the entire population on to a huge colony ship. Then, when the skylark failed they launched all the escape pods, which doubled as cryo pods so that you could survive in space for a long time. Some of the knight made it to Cradle immediately (Alpha Squad), but most (several million) pods were stuck in a deteriorating orbit, crashing every now and then.
As for never taking showers, there could be an armor hygeine fuction, or perhaps they do it when you log of (same for sleeping and other stuff)
Did I miss anything?
Look here then: http://wiki.spiralknights.com/Knight
As for reproducing, ever heard of asexual reproduction? That's how. If you don't believe me, think about this:
How did alts come into existance? Only way is by asexual reproduction.
Although the wiki states them as biological, i like the idea more for a "Bio-mechanical" being. This would explain the stumpy legs and glowing eyes as well as the reason you hardly see them without their armor. It also keeps to the fact that they feel, breath, eat, and sleep. This would also explain as to how they can carry so much and not be slowed down.
The way they carry stuff i always thought the concept was similar to Borderlands Digi-struct system. Where an item is turned into electrical data format and reconstructed upon retrival.
Now look, if there is an issue of gender, the devs should implement some kind of gender setting at the crash-site. Spiral knights is losing players though. SEGA bought Three rings. Three rings id dead, the updates now are just events and patches. Spiral knights is a good game, but it just isn't doing the right things
http://wiki.spiralknights.com/Knights
http://wh40k.lexicanum.com/wiki/Creation_of_a_Space_Marine
http://tvtropes.org/pmwiki/pmwiki.php/Main/NobodyPoops
http://tvtropes.org/pmwiki/pmwiki.php/Main/TheLawOfConservationOfDetail