User blog comment:Flagator24/Biggest character derailments in the Total Drama franchise./@comment-11883116-20180501143254

Agreed with Dip, most of those aren't derailments. TD fandom really needs to use some terms properly.
 * TDAS Sierra - flanderization
 * TDWT Ezekiel - this one I could agree with, but only in his Gollum form. He actually got developed in the first episode. You could also count his Gollum form as flanderization by focusing on his antisocial side to the point of turning him into non-human beast.
 * TDA Geoff - Actually character development. Sure, unsympathetic for the most part, but still. Especially after he redeems himself. Also flanderization, counting TDA Geoff's competition-only era.
 * Dave - Again, character development. Character development doesn't always have to be sympathetic, you know. Mixed with some flanderization due to focusing mostly on his relationship with Sky, abandoning his "normal guy freaked out by the weirdos" part and rarely using his germaphobia in later episodes (and if so, only for comedy).
 * TDA Trent - see TDA Geoff. Their case is quite similar (minus flanderization part).
 * TDRI-TDPI Chris - flanderization
 * TDAS Duncan - character development
 * TDAS Lindsay - flanderization