> prince Fëanor

> one of the good guys

Uhhhh...

Feanor drew his sword on his half-brother and threatened to kill him because he was paranoid Fingolfin was trying to usurp his power. He compelled all of his sons to swear an oath to slay any man, elf or being in possession of the silmarils (which led to subsequent needless bloodshed).

Then he ordered and carried out the mass-murder of relatively unarmed Teleri in order to rob them of their ships.

Such actions does not a good guy make.