User blog comment:Willbachbakal/Poll: Implement a Champion Creator in LoL/@comment-5266525-20121213105407/@comment-1330314-20121213110520

That's why I suggested that a placeholder model serve as a base to the custom champion (kind of like the shitty wizard for Dota 's carrier). The fact that custom champions can only participate in custom matches should also prevent them from taking over LoL.