Oh I see okay...
All you need to do is have a global variable that is set depending which character you choose...
Character1.sprite is clicked
--- Set GlobalVariable.CharacterPicked = 1
Character2.sprite is clicked
--- Set GlobalVariable.CharacterPicked = 2
Character3.sprite is clicked
--- Set GlobalVariable.CharacterPicked = 3
Then when the game starts you spawn the character you want, based on the value of the global variable.
GlobalVariable.CharacterPicked = 1
--- Create object Player1.Sprite
GlobalVariable.CharacterPicked = 2
--- Create object Player2.Sprite
GlobalVariable.CharacterPicked = 3
--- Create object Player3.Sprite
Hope that helps
~Sol