Dunno if you’d want to count it as a TV series persay, but easily Usopp from One Piece. The man goes through an incredible arc of self-discovery before the timeskip, gets hyped as having finally conquered his fears, only to get reverted to his typical cowardice gag every post timeskip arc.
All of the Straw Hats suffer from flanderisation in post-timeskip One Piece, but IMO Usopp’s is the worst, since it reverts him to a flat character that’s heavily uninteresting.
Dunno if you’d want to count it as a TV series persay, but easily Usopp from One Piece. The man goes through an incredible arc of self-discovery before the timeskip, gets hyped as having finally conquered his fears, only to get reverted to his typical cowardice gag every post timeskip arc.
All of the Straw Hats suffer from flanderisation in post-timeskip One Piece, but IMO Usopp’s is the worst, since it reverts him to a flat character that’s heavily uninteresting.