Accidental Hero: Dudley chases his chew toy, which winds up in the possession of D.O.O.M.. Dudley follows D.O.O.M. to their headquarters and manages to defeat three of Snaptrap's henchmen. He also had Snaptrap cornered, and Snaptrap would have surrendered the Kruger rat to him had he not had his mind more on his chew toy. The Chief is so impressed with what Dudley did that he hires him as a T.U.F.F. agent and Kitty's partner.
All Your Powers Combined: Keswick discovers that Dudley is the perfect combination of every breed of dog in existence, giving him the skills of each one (i.e. the nose of a bloodhound, speed of a greyhound, strength of a boxer, etc.) He must have quite a family tree. He's also got a dash of Billy goat, which Keswick isn't quite sure how to explain.
Four-Fingered Hands: Kitty has these. This becomes especially obvious in the scene where she and Snaptrap prepare to battle each other:
Snaptrap: Ready to lose one of your nine lives? Kitty: I'd rather use my ten claws! (brandishing her claws, of which there are clearly only eight)
Furry Confusion: Snaptrap, a large anthropomorphic rat, uses the Kruger Rat to control the minds of all rats in the city, which are Feral rats.
Mix-and-Match Critters: Discussed; when Snaptrap introduces himself to the citizens of Petropolis, a hippo lady guesses that he's the Kangarooster, a bouncing bird who lays exploding eggs.
Paper-Thin Disguise: Kitty as a museum tour guide. Though it might fooled first-time watchers if they see this episode first.
Trap Door: After Dudley manages to free himself and Kitty from Snaptrap, he presses a button that activates a trap door Snaptrap is standing on, causing Snaptrap to fall into a cage below.
Dudley: Come on, Mom, let's do this! Do it! Do it! Do it! Do it! Peg: No, Dudley. Not until you tell me what good doggies always do. Dudley: Always tell the truth, never take stuff that doesn't belong to you, and don't chew your butt in public! (Dudley chews his butt) Peg: Two out of three, not bad.
Villain: Exit, Stage Left: Snaptrap escapes in his escape pod after Dudley tells him to give him back his chew toy.
Welcome Episode: This episode shows how Dudley became a T.U.F.F. agent.
Cats Have Nine Lives: This episode has the Chameleon try to murder Kitty by blowing her up one for each of her nine lives with his Cat-Atomic bomb. Interestingly, there were a total of ten explosives on hand, though he probably wanted to make sure she was dead.
Dudley: Hey, it's Kitty on a pogo stick! Kitty: (as she frees her mouth from the Chameleon's tongue) It's the Chameleon, you idiot! Dudley: Oh no! It's the Chameleon on a pogo stick!
Kitty ends up saying "Or should I call you... THE CHAMELEON???", which was said by Dudley.
Both she and the Chameleon also pick up Dudley's habit of mispronouncing the Chameleon's name as "Cham-A-Le-On".
Harmless Liquefaction: This episode ends with the Chameleon getting blown up twice and his malfunctioning transformation suit electrocuting him until he melts (with a fart sound).
Chameleon: I will now defeat you, by turning into a pile of smoldering goo! [melts] Feeeaar meeeee...!
Human Hammer-Throw: Dudley uses Kitty as a mallet to attack Keswick and The Chief when he suspects them of being The Chameleon.
Mistaken for Transformed: Due to Dudley's extreme stupidity, Dudley keeps mistaking both Kitty and her prized possessions for the Chameleon in disguise and zapping them with his blaster.
Ominous Pipe Organ: The Chameleon has one in his prison cell, which Dudley thinks is really him in disguise at first. The Chief tells him that every cell in the prison has a pipe organ, but not every cell has a light bulb (which the Chameleon is really disguised as).
Revenge: The Chameleon escapes from prison, and is coming after Kitty for sending him there in the first place.
