Thomas the Tank Engine (Sharon Miller era and All Engines Go!)

Thomas the Tank Engine is an anthropomorphic train who is the titular protagonist of Thomas and Friends. During seasons 9 - 16, he has become badly butchered.

Why He Sucks

 * 1) In Splish, Splash, Splosh!, he was being very uncareful while playing in the mud, therefore, his wheels would've rusted.
 * 2) He has lost all of the personality and charm he had in the prior eight seasons and didn't get it back until season 17.
 * 3) In Wonky Whistle, he had a strange whistle that sounded ear-piercing to the point that it scared away the animals from a wagon he was pulling to a fun fair.

Redeeming Qualities

 * 1) He at least started to improve in season 17.