Unfulfilled in life, unable to be vulnerable, or crumbling under bad circumstances- these characters will either arouse pity or contempt as they flounder about in self-wallowing.
Pathetic MCs include: -Socially awkward / NEETs -Crushing on someone out of their league - Inferiority complex / Insecurity about not being good enough -Bullied (and doesn't fight back) -Dillusioned about life - Mediocrity / plain / boring