Joker

How Joker joined the Tourney
The Joker and his goons raided Gotham City Hall, claiming that the city had "a paucity of parking spots designated for clown cars," and took the Mayor hostage, tying him up and strapping a bomb to his chest. As the Joker taunted the Mayor, he expressed his displeasure that Batman hadn't shown up who ironically attacked moments later. The Joker tried to escape via a large parachute but was stopped by Batman, who proceeded to escort the Joker to Arkham Asylum. In addition, as a direct result of Joker's assault on the Mayor, the Mayor declared that he was resigning from his position, having had enough of the city.

Joker's Wild (Neutral)
The Joker throws a steel ridden card at his opponent.

Bombs Away (Side)
The Joker throws a bomb with a smiley face on it that bounces up and down before exploding.

Trampoline Stomp (Up)
The Joker summons a trampoline beneath his feet and bounces on it to jump higher. He then lands hard enough to send a shockwave near him capable of knocking away opponents.

Put It There Pal! (Down)
The Joker opens his seemingly empty hand telling "Gimme five!" "Put 'em there!" or "Handshake?!" If anyone tries to attack him, the Joker stops him/her by grabbing their hand and shocking them with his electric joybuzzer. He then laughs giddily and dances in a circle.

Card Trick (Hyper Smash)
The Joker takes out 4 cards announces "Let's put on a few laughs!" and throws 3 at the opponent's body. If all three of them hit, he throws the last one to the opponent's head, and it blasts the opponent away.

Killing Joke (Final Smash)
The Joker tells the player, "In this battle case, you're gonna love this!" then takes out a gun and shoots it, but instead of a bullet, some confetti and a flag with the word "Bang" on it pop out of the barrel. He drops it and starts to laugh. If the Joker ensnares an opponent with the toy gun, he then pulls out a real gun and shoots the opponent in the head, killing them and taking a life from the stock.

Victory Animations

 * 1) The Joker laughs as he trows cards around, saying "Gotta say, I thought you'd last longer.".
 * 2) *The Joker laughs as he trows cards around, saying "Hey! Someone help Bat-baby up off the floor!" (PMX-003 victories only)
 * 3) The Joker walks up calmly to the camera saying "I'd like to thank my fans for their undying support, and the people of Gotham, who I'll be seeing very very soon.", then points at the camera two times.
 * 4) The Joker does a western-style shot with his joke gun, then a live gun, all the while saying "Too easy! Played you like a violin then cut your strings!".

Trivia

 * The Joker was one of the first four Batman characters to be confirmed as playable characters in Super Smash Bros. Tourney. Confirmed alongside him were Clayface, the Penguin, and Batman.
 * The Joker shares his Japanese voice actor with Dormammu.
 * The Joker's Super Smash Bros. Tourney rival is PMX-003. In the sequel, however, his rival is Sailor Venus.