16 characters! ILE author!
John - variable
Rose - action-ILE (hard to pick because she's one of my favourite characters)
Jade - IEI
Dave (did I even get his name right?) -
(The spidery girl) - psychopathic EIE
Karkat - LSE?
(The animal guy who dresses up as Pupa Pan) - IEI
The rest - ?