Classes: Are not necesarily a rigid restriction on what your character can do, so much as a simple classification of their special or 'theme'. Feel free to submit your own class types, but to save time 'just in case', pm the suggestion to a GM to get it okayed first before completing a CS that may be heavily based on the class of the character, but still, those below won't be ALL you can choose from, I'm pretty lenient in terms to making shit up XD
Note: Try to specify you're class specialty with something like Spell Caster - Fire, or fancify it as Fire-caster, or Warrior - Spear, or Spearman.
Fighter: Fairly simply, this classification suits characters who mainly fight using just their own body instead of special equipment like a sword of some sort of gun. A note though, while being specialized in unarmed combat, they most often still have some form of magical or elemental abilities in their repetoire, most are short ranged, defensive, or melee types though.a
Spell caster: This is so obvious XD or maybe not. Now, 'spellcaster' does NOT meant completely incapable in melee combat, Spell casters are plenty allowed to be nimble an acrobatic, capable of 'defending' themselves head on, but their skill in that sense can't match that of specialized classes in those features.
Warrior: Weapon specialists, as usual unique abilities can be used of course, Warrior's main difference is that they specialize with some form of weapon in particular.
Animalistic: a perhaps more unique variety of class, reffering to character's who's abilities imply either animal enhancements, or animal themed abilities, whether it's a 'guy in a costume' [wierd as that may be sometimes >.>], or someone of actual inhuman quality. Note: 'animalistic' class is not required to use a character that isn't human XD
Morphological: This class often reffers to characters who's bodies are made of some form of liquid, goo men are common, as well as liquid creatures. It could also refer to someone who's 'abilities' or 'attacks' involve rapid short or long term transformations.
Mechanical: This refers obviously to characters who are of a mechanical nature, or perhaps who use mechanical devices more than anything else in combat.
Ghostly: Important thing to know, this doesn't mean that you would be invincible by turning intangible XD It just reffers to characters who's specialty involve ghostly, phantasmal, or even just spookey [fear based] abilities.
Mythic: For characters mostly focused on theme or abilities of some or a mythological creature.