A Signature Move is an attack that which someone uses as a special move in battle. There are certain rules for having a Signature Move...

1: In order to have a Signature Move, you MUST have a Normal power level of at least 1,000,000
2: In order to get your Signature Move, you have to email either me or Knuckles with the name and description of your Signature Move
3: A Signature Move is a Finisher level attack...but it can only be used with Second Wind (so obviously...you MUST know the Second Wind ability in order to have and use a Signature move). If you do not know Second Wind...then I would suggest taking the time to learn it before you get a Signature Move.
4: Keep in mind that a Signature move is a FINISHER level of attack so it can't have properties like it can kill someone or blow up a planet. If you try anything like that, I will not allow it
5: When I hear of your request for a Signature Move, then I will read it over and I MIGHT make adjustments and send it back. If you get your request back with adjustments made to it, then I have allowed you to have it with the NEW qualities

Email Shadow
Email Knuckles

Shadow's Signature Move
Knux's Signature Move
Vegeta's Signature Move
Bass's Signature Move
Chameleon's Signature Move