You can make up your own, or take attacks from other characters. Victory music, taunts (four) and special moves are required, the rest are optional. Taunts are now up/down/left/right.
Victory music: Super Smash Bros. Music - Ness Win
Up taunt: "Show me your moves!"
Left taunt: "Prepare yourself!"
Right taunt: "Hiiiii!"
Down taunt: "I fight for my friends!"
Neutral special: Aura Sphere
Side special: Falcon Punch
Up special: PK Thunder
Down special: Reflector
Victory music: Super Smash Bros. Music - Ness Win
Up taunt: "Show me your moves!"
Left taunt: "Prepare yourself!"
Right taunt: "Hiiiii!"
Down taunt: "I fight for my friends!"
Neutral special: Aura Sphere
Side special: Falcon Punch
Up special: PK Thunder
Down special: Reflector