Timmy Turner (seasons 9 and 10)

Timothy "Timmy" Tiberius Turner is the main protagonist of The Fairly Oddparents. He is voiced by Tara Strong. He has received massive amounts of flanderization from season 9 until the show's cancellation.

Why He Sucks Now
NOTE: This will focus on why he got butchered since season 9 until the show's cancellation.
 * 1) He became a spoiled brat.
 * 2) Timmy has become callous, selfish, and egotistic to the point he was downright unlikable.
 * 3) He also became even more annoying than he already was, similar to Ash Ketchum.
 * 4) Speaking of which, he never aged similarly to Ash Ketchum.
 * 5) * Coincidentally, they're both permanently 10.
 * 6) Whenever his parents AREN'T around, he spawns his Fairly Oddparents just for "fun", which ends up in a havoc, or worse, a wreckage.