Annoying Video Game Helper: While Crash fights Cortex, Aku Aku keeps Uka Uka busy by dueling with him. Their battle can actually kill Crash if he gets caught in the crossfire, and is in fact the main obstacle of the fight. Not only that but this means you can't get a protection from Aku Aku.
Broken Base: Over whether this or the second game is superior. Fans of the second tend to defend it for its lack of out-of-place time trials and having fewer vehicle levels, while fans of the third are more fond of the time travel aspect and more interesting level designs, as well as Crash's expandable move set.
Ensemble Darkhorse: Dingodile and N. Tropy, both because of their designs, the roughness of their Boss Battles and their quirky accents. Dingodile started showing up quite a bit, and Tropy actually took Cortex's place for one game. Sadly, with the Radical Entertainment games, both have developed a case of Chuck Cunningham Syndrome (while Dingodile appeared as a boss in the portable versions of Crash Of The Titans, N Tropy's final appearance was as a minor antagonist in Twinsanity).
Game Breaker: The Fruit Bazooka is this, since now you can aim away at the crates without personally going there, as well as hitting enemies from far away. Not so much for Time Trials, though.
Crash's death animations are usually Played for Laughs, but when he gets hit by one of N. Tropy's energy balls (or by colliding into the flying saucers of the future levels), he explodes into several particles and disintegrates out of existence. There's nothing silly about it. It's played unnervingly straight.
Scrappy Mechanic: A mild example; activating the Nitro Detonator crate in a level - any offscreen Nitro destroyed like this won't take out any adjacent crates if you didn't break them.
That One Boss: N. Gin can be this to some players. For one thing, it's an Unexpected Shmup Level, and the control is actually reversed from the regular shmup levels (i.e tilting your joystick right will make Coco fire to the left).
That One Level: Tomb Wader, especially on Time Trial mode. Hint: Rising water levels.
That One Sidequest: Getting all of the gold or platinum relics which gets you a hidden gem.
They Wasted a Perfectly Good Character: Coco's "playability" is completely superficial, limited to vehicle levels or four or five steps of slow walking. Those getting Warped to play a fresh new character will be sorely disappointed.