Actually, when it comes to the worst CTR character, King Chicken is pretty much up there, due to being just a clueless chicken with a crown; even Penta Penguin has some personality in him. Yes, Baby Crash and Baby Coco are unnecessary, but King Chicken has to be the biggest joke that I've ever seen in the Crash Bandicoot series.
Anyway, it's probably worth noting that there's hardly any diversity with the stat spreads in CTR: Nitro-Fueled. Pretty much every character can use any driving style, but sadly, only Speed and Drift are truly viable for online matchmaking races, partially due to the fact that the majority of items in that game are useless at making any realistic comebacks; the other reason is that Turn and Balanced lack the speed to keep up with Speed and Drift, while Acceleration is pretty much inferior to Drift in all areas (acceleration is irrelevant in CTR). And it's also worth noting that the kart combinations are merely aesthetic, and don't affect gameplay in any way.
Compare that to the Mario Kart series, where there's diverse stat spreads between characters, and your vehicle combination does affect its stats. And let's not forget that speed isn't necessarily everything, since it only takes a couple Red Shells, a Spiny Shell, or even Lightning to ruin someone's day, no matter how far ahead he/she is; that's pretty much where acceleration can help give a player the upper hand.