Too bad there are guidelines...

Main character:
Wow, you have some guts trying to apply on this. Haha just joking.
First state your name. Of course. Then what's your skill/specialty whatever. Where do you belong and where are you now. Your attitude. What you actually do in the story line.
Example:

Name: RHINO ( what kind of parent would name their kid RHINO ? )
Skill/Specialty: Thrusting ( LOL that made me laugh oh so much )
Hometown: The forest
Now: Still in the forest
Attitude: Grumpy
Job: To... guard the forest from mean people

If you actually make something like that I'd laugh at you.

Boss:
So. You want to be a bad*ss boss? There are only 1 boss in each season so if I like it you're damn lucky.
So the guidelines are almost the same but... Oh just look at the example!
Example:

Name: ( Put very awesome name here )
Skill/Specialty: FLYING ( I like flying )
Group: ( Put here if you made a group or you're a traitor or if you're a loner)
Attitude: I'm so nice, I'm actually evil
Season: 2

Note: Season 1 and Season 4 already has a boss... I'm sorry. So battle for season 2 and 3!~

Minor character:
If you can't make it as a main character, well too bad.
Just joking. You can apply for a minor character.

Example:

Name: Guy ( I can't think of example names D: )
Job: ( Put what you do in the story )
Season: ( 1 - 4 )

That's all

Minor boss:
But I wanted to call it mid-boss! D:
So... If you can't make it to be a bad*ss character too bad. Atleast you had your chance. Man, this joke is getting old. Anyway, same guide lines with the Main Bosses.

That's all folks.